Question

a person hold a bundle of hay over his head for 30 minutes and get tired has he done some work or not justify your answer

Answer 1

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The person applies a force on the bundle of hay in the upward direction but there is no displacement of the load.

We know, W = F × s.
Since, s = 0, W = 0.

So, work done by the person on the bundle of hay is zero.

_________
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Answer 2

Answer:

when a person hold a bundle of hay over his head gravitational force acts on the hay downwards part there is no displacement in the bundle of hay in the direction

of force so work is done.

Explanation:

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