MCAT Question A Day - 4/9/14 - Answer!

What is the work done in holding a 20-N weight at a height of 2m above the floor for a total of 5s?

A. 0 J

B. 8 J

C. 2 J

D. 200 J

The correct answer is (A). Work is force times distance moved. A body held at a given height is not in motion, so work is no longer being performed on it.

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