Question

1. you go up a flight of stairs​

Answer 1

Answer:

1 case - The work is done

2 case - No work is done

3 case - The work is done

4 case - The work is done

5 case - Work is done

Explanation:

In the 1 case the work is done because you have a displacement from the earth land to a height.

In the 2 case , the work is not done because you apply force but it does not cause displacement .

In the 3 case the work is done because the ripe mango causes displacement from tree to land in the form of Kinetic energy .

In the 4 case the work is not done because no displacement is caused.

In the 5 case the work is done in the form of Kinetic energy as a swinging pendulum.

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