Question: The efficiency of a muscle during weight lifting is equal to the work done in lifting the weight divided by the total energy output of

The efficiency of a muscle during weight lifting is equal to the work done in lifting the weight divided by the total energy output of the muscle (work done plus internal energy dissipated in the muscle). Determine the efficiency of a muscle that lifts a 161-N weight through a vertical displacement of 0.577 m and dissipates 139 J in the process.

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