Question

In which case work is not done:
A) A girl swimming in a pond
B) A windmill lifting water from a well
C) A standing man holding a suit case in his hand
D) A sail boat moving in the direction of wind​

Answer 1

Answer:

B) A windmill lifting water from a well.

Answer 2

Answer:

Option (D) is correct

A sail boat moving in the direction of wind.

As the boat is only moving in the direction of wind, boat is not doing any work.

So, option (D) is correct

Explanation:

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