Question

In a simple machine, the energy input is 120 J. If the efficiency of the machine is 80%, calculate the energy output

Answer 1

96 Joules

Step-by-step explanation:

We know that efficiency is the ratio of output power by input power. i.e. Efficiency describes the quality of machine or system how good it is.

Solution,

Energy input of system = 120 J

Efficiency = 80% =
`(80)/(100) = 0.8`

Now,

According to definition,

Efficiency =

Cross multiplication:

Calculate the product

Hope this helps...

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