3 years ago

If a machine has an efficiency of 94% and you apply 574J of work, how much work do you get out of the machine

Physics

1 answer:

Mariana [72]3 years ago

7 0

<h3>Answer:</h3>

539.56 Joules

<h3>Explanation:</h3>

Efficiency of a machine is the ratio of work output to work input expressed as a percentage.

Efficiency = (work output/work input) × 100%
Efficiency of a machine is not 100% because so energy is lost due to friction of the moving parts and also as heat.

In this case;

Efficiency = 94%

Work input = 574 Joules

Therefore, Assuming work output is x

94% = (x/574 J) × 100%

0.94 = (x/574 J)

Thus, you get work of 539.56 J from the machine

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