What is the work done in holding a 20 kg block stationary at a height of 2 m for 1 hour?

Type: MCQ • Marks: 1

A. 3920 J

B. 7200 J

C. Zero

D. 400 J

Explanation

Holding an object stationary means zero displacement (s = 0), so work done is zero.

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Class 9th Science (MCQ)

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