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No work is done by a man when he pushes a wall because

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No displacement takes place

No force is applied

No energy is applied

No energy is produced

answer is A.

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Detailed Solution

No work is done by a man when he pushes a wall because no displacement takes place.
Work is defined as “the energy transferred to or from an object via the application of force along a displacement.” It is a product of force

(F)

and displacement

(s)

.Mathematically, Work

(W)

is represented as

W = F \times s

. No work is done by a man when he pushes a wall because no displacement takes place, however hard the man may push the wall.

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