14 A 50-kg crate is pulled 40m along a horizontal floor by a constant force of 100N exerted by a person, which acts at a 37° angle. The floor is rough and exerts a frictional force of 50N. What is the work done by the frictional force? OJ 546.98 J 2000 J 1490J

14 A 50-kg crate is pulled 40m along a horizontal floor by a constant force of 100N exerted by a person, which acts at a 37° angle. The floor is rough and exerts a frictional force of 50N. What is the work done by the frictional force? OJ 546.98 J 2000 J 1490J

Name: 14A 50-kg crate is pulled 40m along a horizontal floor by a constant
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Description: 14A 50-kg crate is pulled 40m along a horizontal floor by a constant force of 100N exerted by aperson, which acts at a 37° angle. The floor is rough and exerts a frictional force of 50N.What is the work done by the frictional force?O OJ546.98 J2000

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter7: Conservation Of Energy

Section: Chapter Questions

Problem 6P: A block of mass m = 5.00 kg is released from point and slides on the frictionless track shown in...

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Give an example of a situation in which there is a force and a displacement, but the force does no work. Explain why it does no work.
a shopper in a supermarket pushes a cart with a force of 35 N directed at an angle of 25 below the horizontal. The force is just sufficient to overcome various frictional forces, so the cart moves at constant speed, (a) Find the work done by the shopper as she moves down a 50.0-m length aisle, (b) What is the net work done on the cart? Why? (c) The shopper goes down the next aisle, pushing horizontally and maintaining the same speed as before. If the work done by frictional forces doesnt change, would the shoppers applied force be larger, smaller, or the same? What about the work done on the cart by the shopper?
a shopper in a supermarket pushes a cart with a force of 35 N directed at an angle of 25 below the horizontal. The force is just sufficient to overcome various frictional forces, so the cart moves at constant speed, (a) Find the work done by the shopper as she moves down a 50.0-m length aisle, (b) What is the net work done on the cart? Why? (c) The shopper goes down the next aisle, pushing horizontally and maintaining the same speed as before. If the work done by frictional forces doesnt change, would the shoppers applied force be larger, smaller, or the same? What about the work done on the cart by the shopper?
A worker pushes a wheelbarrow with a horizontal force of 50 N on level ground over a distance of 5.0 m. 11 a friction force of 43 N acts on the wheelbarrow in a direction opposite that of the worker, what work is done on the wheelbarrow by the worker? (a) 250 J (b) 215 (c) 35 J (d) 10 J (e) None of those answers is correct.
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