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Is it true that some work is done by a man holding a bundle of hay over his head for $30$ minutes?

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True

False

answer is B.

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Detailed Solution

The given statement is false.
Work done is defined as the product of force and displacement.
Numerically,

W = F \times d

Since the man holds the bundle for 30 minutes over his head so there will be no changes in the position of the bundle that means no displacement.
So,

d = 0

Then

W = 0

.
No any work is done by a man holding a bundle of hay over his head for

30

minutes

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