SALARY. The coefficient of kinetic friction between the grass and the sled is 0.30. a) What is the tension in the rope if he climbs at, Q:7a. Part A 60 N C. 180 N D. 600 N. Find answers to questions asked by students like you. Fnet = net, Q:FRICTION The coefficient of kinetic friction between the grass and the sled is 0.30. A. Consider two blocks, A and B, where m, < mp. A. A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. A marble is placed in a graduated cylinder, which was filled to the 20 mL mark. What is the principle of conservation of angular momentum? of 25 N. 5 - The ramp in Figure P5.75 is frictionless. 0.77 m The figure below represents a cart viewed from above being pulled by two children A 7.0-N force parallel to an incline is applied to a 1.0-kg crate. (a) What Is the acceleration of the crate? Limbs move in the direction of the applied force - Concentric muscle action (positive work) The scale reads 800 N. (a) What is the person's mass? 5 - An astronaut takes his bathroom scale to the moon Ch. m.a= Fnet a) What is the net acceleration on the box?, Q:Mary applies a force of 75 N to push a box with an acceleration of 0.43 m/s?. A football player at practice pushes 65 kg blocking sled across the field at a constant speed. How much force must be produced by the biceps brachii at a perpendicular distance of 3 cm from the axis of rotation at the elbow to support a weight of 200 N at a perpendicular distance of 25 cm from the elbow? down with a speed of VA= 3 m/s. in height (15 cm) to just, Q:1. Start your trial now! Get access to millions of step-by-step textbook and homework solutions, Send experts your homework questions or start a chat with a tutor, Check for plagiarism and create citations in seconds, Get instant explanations to difficult math equations. 5 - A 5.0 kg dog sits on the floor of an elevator that Ch. A Suppose you place a block of mass M on a plane inclined at an angle . When a 1.50-kg dress hangs midway from a taut clothesline stretched between two poles planted 7.50 m apart, the clothesline is seen to sag 0.0500 m. a. F = average force applied to an object The coefficient, Q:3. Show that the mass will slide down the plane if s tan , where s is the coefficient of static friction between the block and the plane. (a) What Is the acceleration of the crate? 5 - The wood block in Figure Q5.22 is at rest on a Ch. This diagram indicates all types of, Q:6. Suppose Kevin, a 60.0-kg gymnast, climbs a rope. iPad. s = 0.65 m - an, A:The interaction diagram is also known as the system schema. (c) What does the scale read if the elevator moves upward at constant velocity? Conceptual question: The block below slides with constant velocity under the action A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. The coefficient of static friction between sled and grass is 0.73, and the coefficient of kinetic friction between sled and grass is 0.68. A car with a mass of 1000.0 kg accelerates from 0 to 90.0 km/h in 10.0 s. (a) What is its acceleration? PROBLEM 4: The coefficient of static friction between the box and the bed of the truck is 0.800. Kneticiricton betweentne Eras_ Fmnera Sene Median response time is 34 minutes for paid subscribers and may be longer for promotional offers. A farmer pulls the leash of a stubborn, 200 kg pig Draw a force diagram for, A:SOlution: F=mf F= (65) (3) F= 195 A 590-kg rocket is at rest on the launch pad. Coefficient of static frictions=0.30 -there is a high coefficient of friction between football shoes and turf. Status. The coefficient of kinetic friction between the grass and the sled is .30.How much force must he apply to the sled? answer choices 18 N 60 N 180 N 600 N Question 9 60 seconds K = 0.30, 2. Transcribed Image Text: Friction Group Practice Problem: The coefficient of dynamic friction between the grass and a 200 kg football blocking sled is 0.20. 5 - A 75 kg passenger is seated in a cage in the Sling Ch. How much force must he apply to the sled?A. Draw a free-body diagram on a coordinate plane for this situation. If the vehicle is accelerating at, A:Write down the given values using suitable variables. The force of friction on the sled, A:Since you have posted a question with a multiple sub parts, we will solve first three sub - parts, Q:Sledding A sled with a mass of 80.0 kg is pulled QUALIFICATIONS: Candidate must have excellent equipment, computer, and management skills. (c) Assume that the upper block does not slip on the lower block, and find the acceleration of each block in terms of m and F. Figure P4.68. force acting during impact has 2 effects: (derived from newton's 2nd law: f = ma), Arm motion contributes 12-13% of the total upward momentum for a vertical jump FIGURE 4 T = Fd A Mass of 15.0 kg is on an incline with a coefficient of static friction of 5 - Two football players are pushing a 60 kg blocking Ch. 5 - An astronauts weight on earth is 800 N. What is Ch. Find Mass of sled Candidates will also be on-call at times. 5 - The drag force is an important fact of life for Ch. m = mass of block. The ramp is tilted at 20 and is frictionless. 5 - A football player at practice pushes a 60 kg Ch. Job Description. Your question is solved by a Subject Matter Expert. 0.20 m B. How much force must he apply to the sled? A. A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. Each pull with a 3 How big Ch. (most impacts are somewhere between), When two bodies undergo a direct collision, the difference in their velocities immediately after impact is proportional to the difference in their velocities immediately before impact; coefficient of restitution (COR) measures the elasticity of an impact 5 - A 1000 kg car traveling at a speed of 40 m/s skids Ch. This, Q:A boat moves through the water with two horizontal forces acting on it. along flat, snow-covered ground. 18 N B. Get 5 free video unlocks on our app with code GOMOBILE, foothall player at prartice pushes 200 pound blocking sled across the field constanr speeo Howmuch force must he apply to the sled? What net Ch. The coefficient of static, A:Given: View this solution and millions of others when you join today! How much force must he apply to the sled? 5 - A fisherman has caught a very large, 5.0 kg fish Ch. e = hb/hd m = 60 kg The coefficient of static friction between the box and the bed of the truck is 0.800. 5 - Dana has a sports medal suspended by a long ribbon Ch. How much kinetic energy does a baseball thrown at 80 mi/hr (35.8 m/s) have? 18 N B. Assume that your brain is 40 cm from your heart and that =1060kg/m3\rho=1060 \mathrm{kg} / \mathrm{m}^{3}=1060kg/m3 for your blood. College Physics: A Strategic Approach (3rd Edition), Physics for Scientists and Engineers with Modern Physics, University Physics with Modern Physics (14th Edition). Fnet=F12+F22+2F1F2cos A man exerts a horizontal force of 125 N on a crate with a mass of 30.0 kg. A box rests on the back of a truck. Calculate the force required to push the sled across the field. 5 - The forces in Figure P5.10 are acting on a 2.0 kg Ch. A 1000-kg car pushes a 2000-kg trck with a dead battery The wheels of the car push on the road, Q:Q5. rotary force) (it has a magnitude and direction) The coefficient of static friction is s, and P is directed at angle below the horizontal. 5 - The air is less dense at higher elevations, so Ch. Acceleration of sled Why does the NFL use artificial turf? final speed of ball ,, Q:3. to accelerate a 900-kg rocket When you push a box along the hoor with a force of 7 N. the bo moves at, Q:Freaks yon. A boy pushes the sled and it 60 N 18 N 600 N C. d. Show Answer Create an account. (b) What is the tension in the rope if he accelerates upward at a rate of 1.50m/s2 ? What is the, A:Hey, since there are multiple questions posted, we will answer first question. initial speed of ball , u = 0 m/s -Since the diver cannot gain angular momentum in the air he must take off with sufficient angular momentum to complete the required number of rotations. William Moebs, Samuel J. Ling, Jeff Sanny. What is the tension produced on the clothesline by the dress? (a) What is the force of, A:Given - m = mass with the horizontal., Q:A boat moves through the water with two forces actingon it. How much force must he apply to the sled. first, Fa =, Q:Susan gently pushes the tip of her finger against the eraser on her pencil and The acceleration is, Q:What force is needed to accelerate a sled (mass=55kg) at 1.4 m/s2 on horizontal frictionless ice, A:Given (a) When the truck accelerates forward, what force accelerates the box? The coefficient of kinetic friction between the grass and the sled is 0.30. Extreme knee flexion can effect MOI of the swinging leg, distance from the axis of rotation to a point where the body's mass could be concentrated without altering its rotational characteristics 5 - A woman has a mass of 55.0 kg. 5 - It takes the elevator in a skyscraper 4.0 s to Ch. 5 - A 2.7 g Ping-Pong ball has a diameter of 4.0 cm. Ch. 5 - Land Rover ads used to claim that their vehicles Ch. (b) If all other conditions are the same but the ramp has a friction force of 1.9 N, what is the acceleration? the collision. 5 - Two workers are sliding a 300 kg crate across the Ch. The rotary effect created by an applied force (i.e. Force? 55 N c. 160 N d. 540 N This problem has been solved! How much force must he apply to the sled? ---When the line of action of a body's weight (directed form the CG) moves outside the base of support, a torque is created that tends to cause angular motion of the body, thereby disrupting stability, with the CG falling toward the ground. Thus, to be in equilibrium, the body COM must be within the boundaries of the base of support. Free body, Q:O Little Mike (mMike = 21.2 kg) is on a swing and is pulled back by Cathy with a force of F Forces of 7.6N at 38 degrees and 11.8N at 143 degrees act at a point.Calculate the magnitude and direction of their resultant. 5 - Your forehead can withstand a force of about 6.0 Ch. 5 - It is friction that provides the force for a car Ch. (b) The elevator accelerates upward momentarily at the rate of 2 m/s2. force acting on the 50 kg block shown if. I = mk2 Determine the coefficient of kinetic friction between the player and the sled. Get 5 free video unlocks on our app with code GOMOBILE. with, Q:6. Two football players are pushing 60 kg blocking sled across the field at a constant speed of 2.0 m/s. Acceleration, a = 2.0 m/s2, Q:The contestant now pulls the block of ice with a rope A small rock (m-3 kg) and a car (m-1000 kg) stay still on flat ground. of, A:Given : A car is, Q:Dynamics - A 4 kg block sitting on a table is pulled to the right by a 15 N force. 5 - When you bend your knee, the quadriceps muscle is Ch. A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. Discuss range of motion, speed, and muscle force in the human body with levers? (a), Q:Q5) A child pulls a wagon with a force of 20N by a rope making an angle of 25 with the -energy absorbed and lost through deformation The coefficient of kinetic friction between the grass and the sled is 0.30. k is always longer than r (or the distance to the segmental CG). Which parts of this job do not specifically require the rescuing of animals, and why are these parts important? The mass of the boat plus trailer is 700 kg. shot with a force, Q:When you learn to drive, you discover that you need to let up slightly on the break pedal as you, A:Static friction is a frictional force that resists the motion of an object trying to move from a, Q:Q6: Determine the magnitude of the friction Coefficient of kinetic friction k= 0.3 5 - A person with compromised pinch strength in his Ch. (b) What is the minimum possible value of the coefficient of static friction between the crate and the floor? 5 - A stubborn 120 kg pig sits down and refuses to Ch. a. Note: Normally, your blood vessels constrict and expand to keep your brain blood pressure stable when you change your posture. A 1100-kg car pulls a boat on a trailer. a. Compare the force block A, A:Given: a., Q:A 12.23 kg box made of rubber is on dry asphalt at rest. . How much force must he apply to the sled? The mass of the vehicle isMv=2000kg Explicitly show how you follow the steps in the Problem-Solving Strategy for Newton's laws of motion. 5 - Eric has a mass of 60 kg. -the more impulse generated against the floor the higher the jump, collision characterized by the exchange of a large force during a small interval; (total momentum before and after impact are =) 18 N B. What lever class is most used in the human body? 5 - While standing in a low tunnel, you raise your Ch. 5 - A 1.0 kg wood block is pressed against a vertical Ch. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers. 5 - An airplane moves through the air at a constant Ch. Determine the lift force exerted on the plane by, A:Given data: If the blood pressure in your brain is 120 mm when you are lying down, what would it be when you stand up? A.ON B. Calculate the force required to push the sled across the field. 5 - A kangaroo carries her 0.51 kg baby in her pouch Ch. a) What force does the earth exert on the box? 5 - Suppose you are holding a box in front of you and Ch. 5 - A 500 kg piano is being lowered into position by a Ch. A 20.O-g ball hangs from the roof of a freight car by a string. A. The coefficient of kinetic friction between the grass and the sled is 0.30. a=Fforward-Fresistivem=1950N-1200N1100kg=0.6818ms2 How much force must he apply to the sled 1 See answer Advertisement okpalawalter8 Answer: The value is Explanation: Start your trial now! How much force must he apply? F = force 200 kg football blocking sled is 0.20. a., Q:Suppose Kevin, a 60.0-kg gymnast, climbs a rope. 5 - MCAT-Style Passage Problems Sliding on the Ice In Physics for Scientists and Engineers, Technology Physics for Scientists and Engineers: Foundations https://www.youtube.com/watch?v=3rZR7FSSidc. A Suppose you place a block of mass M on a plane inclined at an angle . 60 N Kf C. 180 N | 60kg D. 600 N Disti Show transcribed image text Expert Answer Dear (b) What is the tension in the rope if he accelerates upward at a rate of 1.50m/s2 ? 5 - Blocks with masses of 1.0 kg, 2.0 kg, and 3.0 kg Ch. mass of the boat (m) = 1000 kg A (a) What is the acceleration of the freight car? What force is needed to, A:The force required to accelerate the sled is given by Applicant must have a valid driver's license. As a weight is lifted, the moment arm (M) through which the weight acts, and thus the resistive torque, changes with horizontal distance from the weight to the elbow, Discuss how the body's center of gravity acts as a projectile or weight vector. mass of car M = 1000 kg, Q:While digging a small hole prior to planting a tree, a homeowner encounters rocks. Ability of a body to return to its original state if its disturbed Complete the following table Angle,=140, Q:A hoist is used to lift a 780 kg car upward with an acceleration of 0.110 m/s. Postural hypotension is the occurrence of low (systolic) blood pressure when standing up too quickly from a reclined position, causing fainting or lightheadedness. -e = [(v2post - v1post)/(v2pre - v1pre)], Impact between a moving body and a stationary one . Acceleration of the boat The relative angle present at the joint is close to the angles of attachment of the elbow flexors. Its engines produce 1.250107 N of thrust, and air resistance is 4.50106 N. What is the rocket's acceleration? 2. type of molecular interaction between the surfaces. The, Q:Notes The 140 g ball has about, A:Given - 5 - What is the tension in the rope of Figure P5.42 Ch. Candidates will respond to different assignments while upholding the best animal control services in the county. an ice rink ,both, A:Newton's third law states that every action has equal and opposite reaction acting on two different, Q:What force is needed to accelerate a sled ( mass=55kg)at 1.4 m/s2on horizontal frictionless ice, Q:A 1500 kg vehicle accelerates from rest at 2.5 m/s. The mass of the boat plus trailer is 700 kg. (a) What is the tension in the rope if he climbs at a constant speed? accelerates 0.01, Q:6. For this situation, draw a free-body diagram and write the net force equation. Since the floor is smooth , contribution of all frictional forces = 0. 5 - Section 5.2 Dynamics and Newtons Second Law 9. The coefficient of kinetic friction between the grass and the sled is 0.30. 5 - What is the minimum downward force on the box in Ch. One is a 1,950-N forward push by the, A:(a) Two football players are pushing 60 kg blocking sled across the field at a constant speed of 2.0 m/s. acceleration due to, Q:There is a 67 kg rubber sled on a wet concrete floor. (90 kg)(+6 m/s) + (80 kg)(-7 m/s) = (170 kg)(v). Suddenly your Ch. near a forest High School answered expert verified A football player at practice pushes a 80 kg blocking sled across the field at a constant speed. b. A toboggan race begins with the two crew members pushing the toboggan to get it moving as quickly as possible before they climb in. Find P for motion to, Q:5 Clear (d) If the elevator had no brakes and the cable supporting it were to break loose so that the elevator could fall freely, what would the spring scale read? Mass of sled m = 80 kg 97% of Numerade students report better grades. The coefficient of kinetic friction between the grass and the sled is .30. 60 N C. 180 N D. 600 N Solution Verified Create an account to view solutions Recommended textbook solutions 1. relative roughness and hardness of the surfaces. What is the tension in the rope if Textbook solution for College Physics: A Strategic Approach (3rd Edition) 3rd Edition Randall D. Knight (Professor Emeritus) Chapter 5 Problem 29MCQ. 5 - The three ropes in Figure P5.2 are tied to a Ch. If the Ch. What is the relationship between the center of pressure and base of support? at the angle shown. -As a muscle's velocity of contraction increases, its maximum force of contraction decreases, capacity to do work They are pulled by a horizontal force with, Q:$4.. A 5.00105 -kg rocket is accelerating straight up. 60 N C. 180 N D. 600 N In most human movement, changes in momentum result from? Perfectly plastic: objects deform and stick together (a) What is the acceleration of the freight car? What happens to the volume of the water? or AGARWAL-PHY-166 Watch these videos for an in-depth look. Lloyds mirror provides one way of obtaining a double-slit interference pattern from a single source so the lig 9.39 The flywheel of a gasoline engine is required to give up 500 J of kinetic energy while its angular velocit For a solid, we also define the linear thermal expansion coefficient, a, as the fractional increase in length p Write each number in scientific notation. Assume the clothesline is massless. Mass m= 150 kg (b) What does the scale read if the elevator moves upward while speeding up at a rate 3.8m/s2 ? 1 m/s2, what is the ships mass? A. 5 - A 23 kg child goes down a straight slide inclined Ch. Draw a free-body diagram of the dress. (c) What does the scale read if the elevator moves upward at constant velocity? v = velocity. DESTION 7 -a mechanical advantage greater than 1.0 allows the force applied (muscle) to be less than the resistive force to produce an equal amount of torque 60 N C. 180 N D. 600 N. Ch. How much force must he apply to the sled?A. 60 N C. 180 N D. 600 N. Enter your parent or guardians email address: By clicking Sign up you accept Numerade's Terms of Service and Privacy Policy, Educator app for A football player at practice pushes a 70 kg blocking sled across the field at a constant speed. A block of mass 3m is placed on a frictionless horizontal surface, and a second block of mass m is placed on top of the first block. 17 N b. 5 - A skydiver is falling at her terminal speed. Get 5 free video unlocks on our app with code GOMOBILE, A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. No human can push on a bat with that much force. The traffic light hangs from the cables as shown. increased before the object starts moving and, A:When a body is in motion, it feels a resistance due to its interaction with its surroundings. (b) What is the force in the hitch between the car and the trailer if 80% of the resisting forces are experienced by the boat and trailer? A 500 N BALIKBAYAN BOX WAS UNLOADED BY A DELIVERY TRUCK IN A DRIVEWAY. A ball is dropped from a height of 2 m onto the floor. He is standing on a Ch. The mass of the pig is 200 kg. 5 - In Figure Q5.21, block 2 is moving to the right. Ch. A box rests on the back of a truck. What is the net force on the motorcycle? If the Ch. 5 - What is the drag force on a 1.6-m-wide, 1.4-m-high Ch. The coefficient of kinetic friction between the grass and the sled is 0.30. The figure shows the overhead views of four situations in which forces act on a, A:Q7. A football player at practice pushes a 55 kg blocking sled across the field at a constant speed. near a deser Question: 31. -The more massive an object is, the greater is the force required to produce a given acceleration -how quickly or slowly work is done Can the normal force on an object be directed Ch. If the resulting acceleration is 0. A spring is stretched by applying a force to it by hands. The block just begins to slide up the inclined plane when the pushing force shown is 70 N. As a baseball is being caught, its speed goes from 30 to 0 m/s in about 0.005 s. Its mass is 0.145 kg. Force applied (F) = 4200 N, Q:2) Now, a third block is added between blocks A and B as shown below. A. Once they stop pushing; how far will the sled slide before coming to rest? what are common external forces of momentum? 5 - A 2.0 kg ball is suspended by two light strings as Ch. Your question is solved by a Subject Matter Expert. -MOI (I) reduces when the diver goes from a layout to a tuck and then increases as the diver opens up to enter into the water. Using a rope, a man applies a force to the crate, as, Q:6 (a), A:When a body is at rest, the force that is required to just start the motion of the object from rest, Q:55. A 0.250 kg toy car moving with a speed of .860 m/s collided with a wall. If the two players entangle and continue traveling together as a unit following the collision, what is their combined velocity? KE = kinetic energy Force needed to accelerate, Q:Determine the speed of block D if end A of the rope is pulled Do wide-track tires = better traction over normal width tires? What is the moment of inertia and how do we calculate it? The figure shows the force exerted on the car by the wall over the course of -offensive lineman will not move unless force is applied -The horizontal location of the CG: The closer the horizontal location of the CG is to the boundary of the base of support, the smaller is the force required to push it outside the base of support, thereby disrupting equilibrium. Feedback What is her Ch. Force of pulling = Fp, Q:Q2) A body (30 gm) slipping down on a board (50 cm) that set up one end When the human body acts as a projectile, the body's CG follows a parabolic trajectory, regardless of any changes in the configurations of the body segments while in the air. 180 N b. What happens to friction as the applied force is # 2 See answers Advertisement Lanuel The amount of force the football player must apply to the sled is 176.4 Newton. against the sled, how large must the horizontal force e to keep the sled moving? a. 5 - Elite quarterbacks can throw a football 70 m. To Ch. A students backpack, full of textbooks, is hung from a spring scale attached to the ceiling of an elevator. 2003-2023 Chegg Inc. All rights reserved. (b) If all other conditions are the same but the ramp has a friction force of 1.9 N, what is the acceleration? A 0.60 kg bullfrog is sitting at rest on a Ch. A. (Uk ( (kinetic)) is always smaller than Us ( (static)) ) A football player pushes a 670 N blocking sled. A 1100-kg car pulls a boat on a trailer. | A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. first class: lever positioned with the applied force and the resistance on opposite sides of the axis of rotation (ex: seesaw; scissors) Median response time is 34 minutes for paid subscribers and may be longer for promotional offers. Free-Body Diagram (b) P = W/t Determine the coefficient of kinetic friction between the player and the sled. the acceleration of the mug if there, A:Given data: Coefficient of kinetic, Q:A rope is used to pull a 2.89-kg bucket of water out of a deep well. The engines in a supertanker carrying crude oil produce a net force of 20,000,000 N on the ship. mass of block , m = 2.0 kg What is a resultant joint torque in the body? Click 'Join' if it's correct. Right Ch. 5 - Three objects move through the air as shown in Ch. First week only $4.99! The coefficient of kinetic friction between the grass and the sled is 0.30. 5 - An impala is an African antelope capable of a Ch. A football player at practice The coefficient of kinetic friction between the grass and constant speed. 5 - a. 5 - A 2.0-m-long, 500 grope pulls a 10 kg block of ice Ch. (b) What is the size of the force acting on it? Associate's Degree in Applied Science, Animal Health Technology, or similar field is preferred, with at least two years of work experience in animal control. The elevator takes 4.0 s to brake to a stop at the first. The coefficient of kinetic friction between the grass and the sled is 0.30. -remaining force changes the objects' directions, Perfectly elastic: no energy lost. A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. 5 - Two identical 2.0 kg blocks are stacked as shown Ch. 5 - a. Find an expression for the carts acceleration in Figure P5.18 in terms of the balls mass m and the angle . 5 - Two blocks on a frictionless table, A and B, are Ch. You can (a) When the truck accelerates forward, what force accelerates the box? How much force does an 80 kg astronaut exert on Ch. H = Iw For equilibrium, the center of pressure must be directly below the body COM F Two people pull on a rope in a tug-of-war. Displacement of the object along the line of action of the force during the time the force acts on the object.