Question

. In which case work is not done? 

a. A girl swimming in a pond

b. A wind mill lifting water from a well

c. A sail boat moving in the direction of wind

d. A standing man holding a suitcase in his hand.

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Answer 1

Answer:

option is b A wind mill lifting water from a well

Answer 2

Answer:

ans:d

Explanation:

A standing man holding a suitcase in his hand.....

because their is no displacement so the work is not done........