Fthe work put into a lever is 930 joules and the work accomplished is 870 joules, the efficiency of the lever is

If the work put into a lever is 930 joules and the work accomplished is 870 joules, the efficiency of the lever is 94%.

Explanation:

The work put into the lever, input power of the lever = 930 joules

Work accomplished, output power of the lever = 870 joules.

Efficiency = output power / input power in terms of percentage.

Efficiency = 870 / 930 = 0.935.

Efficiency in terms of percentage = 0.935 * 100 = 94%

Therefore, efficiency of the lever = 94%.

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