Question:
Which one of the following statements for the work done by gravity on a body is NOT correct?
Which one of the following statements for the work done by gravity on a body is NOT correct?
Options:
- Work done is independent of the path followed by the body
- Work done depends only on the vertical distance separating the initial and the final position of the body
- Work done depends on the path followed by the body
- Work done is zero if the body is displaced horizontally to the force of gravity
- Work done is independent of the path followed by the body
- Work done depends only on the vertical distance separating the initial and the final position of the body
- Work done depends on the path followed by the body
- Work done is zero if the body is displaced horizontally to the force of gravity
Correct Answer: Work done depends on the path followed by the body
Explanation:
In case of conservative forces like gravity, work done is a state function; it depends only on initial and final position and is independent of the path. In case of non-conservative forces like friction, work depends on path followed by an object.
In case of conservative forces like gravity, work done is a state function; it depends only on initial and final position and is independent of the path. In case of non-conservative forces like friction, work depends on path followed by an object.