(d) the force of gravity on the bucket in part (c)The bucket does work on gravity.The force of gravity does work on the bucket.No work is done.Is the work positive or negative?The work is positive.The work is negative.No work is done.(e) the leg muscles of a person in the act of sitting downThe leg muscles do work on the individual.The individual does work on the leg muscles.The individual does work on the chair.No work is done.Is the work positive or negative?The work is positive.The work is negative.No work is done. Discuss whether any work is being done by each of the following agents and, If so, whether the work is positive or negative.(a) a chicken scratching the groundA chicken does work on the ground.O The ground does work on the chicken.No work is done.Is the work positive or negative?The work is positive.The work is negative.No work Is done.(b) a person studying (holding up a book but not moving it)• The person does work on a book.O The book does work on the person.No work is done.Is the work positive or negative?The work is positive.The work is negative.No work is done.(c) a crane lifting a bucket of concreteThe crane does work on the bucket.The bucket does work on the crane.No work is done.Is the work positive or negative?The work is positive.The work is negative.No work is done.(d) the force of gravity on the bucket in part (c)O The bucket does work on gravity.MacBook Air

Name: (d) the force of gravity on the bucket in part (c)The bucket does wor
Uploaded: 2024-03-20T06:57:25.000Z
Channel: Bartleby
Description: (d) the force of gravity on the bucket in part (c)The bucket does work on gravity.The force of gravity does work on the bucket.No work is done.Is the work positive or negative?The work is positive.The work is negative.No work is done.(e) the leg mus

Answered: Image /qna-images/answer/b052c6c5-3002-454a-97d3-2d90c6998985.jpg

Science

Physics

(d) the force of gravity on the bucket in part (c) The bucket does work on gravity. The force of gravity does work on the bucket. No work is done. Is the work positive or negative? The work is positive. The work is negative. No work is done. (e) the leg muscles of a person in the act of sitting down The leg muscles do work on the individual. The individual does work on the leg muscles. The individual does work on the chair. No work is done. Is the work positive or negative? The work is positive. The work is negative. No work is done.

(d) the force of gravity on the bucket in part (c) The bucket does work on gravity. The force of gravity does work on the bucket. No work is done. Is the work positive or negative? The work is positive. The work is negative. No work is done. (e) the leg muscles of a person in the act of sitting down The leg muscles do work on the individual. The individual does work on the leg muscles. The individual does work on the chair. No work is done. Is the work positive or negative? The work is positive. The work is negative. No work is done.

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

Chapter6: Energy Of A System

Section: Chapter Questions

Problem 1CQ

See similar textbooks

Similar questions

Suppose you are jogging at constant velocity. Are you doing any work on the environment and vice versa?
Find the work done by the same force in Example 7.4, between the same points, A=(0,0) and B=(2m,2m) , over a circular arc of radius 2 m, centered at (0,2m) . Evaluate the path integral using Cartesian coordinates. (Hint: You will probably need to consult a table of integrals.)
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.
The surface of the preceding problem is modified so that the coefficient of kinetic friction is decreased. The same horizontal force is applied to the crate, and after being pushed 8.0 m, its speed is 5.0 m/s. How much work is now done by the force of friction? Assume that the crate starts at rest.
Cite two examples in which a force is exerted on an object without doing any work on the object.
As a young man, Tarzan climbed up a vine to reach his tree house. As he got older, he decided to build and use a staircase instead. Since the work of the gravitational force mg is path Independent, what did the King of the Apes gain in using stairs?
Check Your Understanding The spring Example 7.5 is compressed 6 cm from its equilibrium length. (a) Does the spring force do positive or negative work and (b) what is the magnitude?
A particle moving in the xy -plane is subject to a force F(x,y)=(50Nm2)(xi+yj)( x 2 + y 2 )3/2 , where x and y are in meters. Calculate the work done on the particle by this force, as it moves in a straight line from the point (3 in, 4 m) to the point (8 in, 6 in).
Describe a situation in 4iich a force is exerted for a long time but does no work. Explain.
Find the work done by the same force in Example 7.4, between the same points, A=(0,0) and B=(2m,2m) , over a circular arc of radius 2 m, centered at (2m,0) . Evaluate the path integral using Cartesian coordinates. (Hint: You will probably need to consult a table of integrals.)
Repeat the preceding problem, but this time, suppose that the work done by air resistance cannot be ignored. Let the work done by the air resistance when the skier goes from A to B along the given hilly path be —2000 J. The work done by air resistance is negative since the air resistance acts in the opposite direction to the displacement. Supposing the mass of the skier is 50 kg, what is the speed of the skier at point B ?
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.