With the help of the lever, useful work of 80J is performed. Determine the efficiency of the lever if the total work is 100J.

univerkov | August 6, 2021 | education

Data: Ap (useful work done with the lever) = 80 J; Apoln. (full work value) = 100 J.

The efficiency of the lever can be calculated using the formula: η = (Ap / Apol.) * 100%.

Calculation: η = (80/100) * 100% = 80%.

Answer: The lever efficiency is 80%.

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