Question

In which of the following, work is being done?

• A. Man sitting on a bench
• B. Person Standing with a basket of fruit on the head.
• C. Climbing a tree to pluck.
• D. Pushing a wheelbarrow of bricks.

Answer 1

Answer: (C), (D)

The correct options are
C Climbing a tree to pluck.
D Pushing a wheelbarrow of bricks.

Work is done when a force is applied on a body such that it causes displacement of the body in the direction of the force.

1. Man sitting on a bench is remaining static. Hence, no work is done.

2. The person standing with a basket of fruit on the head is also remaining stationary, no displacement is involved. Hence, no work is done.

3. Climbing a tree, the person is doing displacement against gravitational force. Hence, work is done.

4. Pushing a wheelbarrow requires some force and because of the force applied it moves. Hence, work is done.
Hence option C and D are correct as they are involved in work done.