Question

A person carries stone weighing 20 kg on his head and stands for 2 hour. Calculate the work done.​

Answer 1

The work done = Force*Displacement*cosX

where, X is the angle between Force and Displacement vector

Force = mg = 20g = 200N

Displacement = 0m

Therefore, Work done = 0J

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Answer 2

TOPIC :- WORK

CONCEPT :- Work done is defined as the product of force and displacement.

I.e. W = F .S

Here, F = mg

=> F = 200 N

Displacement = 0.

Hence, work done = F × 0 = 0.

Hence, the work done is 0.