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Bill does 1500 J of work on a lever, which is a simple machine. The lever does 1350 J of work on a stone.


What is the efficiency of the lever?


0.9%

1.1%

90%

111%

Verified Answer :

Efficiency is the measure of how much work or energy is conserved in a process. In many processes, work or energy is lost, for example as waste heat or vibration. The efficiency is the energy output, divided by the energy input, and expressed as a percentage.
Efficiency is the energy output, divided by the energy input, and expressed as a percentage. 
Efficiency = (1350/1500)×100
                = 90%

onyebuchinnaji

The efficiency of the lever at the given output work and input work is determined as 90%.

What is the efficiency of the lever?

The efficiency of a lever is defined as the ratio of output work to input work  of the lever multiplied by 100 percent.

For the given lever, the efficiency of the lever is calculated as follows;

eff = (output work/input work) x 100%

eff = (1350/1500) x 100%

eff = 90%

Thus, the efficiency of the lever at the given output work and input work is determined as 90%.

Learn more about efficiency here: https://brainly.com/question/15418098

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