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1 April, 10:09

If a machine has 100% efficiency, it means that

A. output work is equal to input work.

B. output force is equal to input force.

C. output work is twice the input work.

D. output force is twice the input force.

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  1. 1 April, 10:37
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    The answer should be A, because efficiency = (effective work) / (executed work) * 100%
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