Question

a person holds 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

$\huge \underline \bold \red {AnsWer}$

When a person holds a bundle of hay over his head, then there is no displacement in the bundle of hay. Although, force of gravity is acting on the bundle, the person is not applying any force on it. Hence, in the absence of force, work done by the person on the bundle is zero.

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Answer 2

$\huge \mathcal \pink{Answer}$

When a person holds a bundle of hay over his head, then there is no displacement in the bundle of hay. Although, force of gravity is acting on the bundle, the person is not applying any force on it. Hence, in the absence of force, work done by the person on the bundle is zero.