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You have designed a machine that requires 1000 J of work from a motor for every 800 J of useful work done by the machine. What is the efficiency of the machine?
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15 votes
15 votes
You have designed a machine that requires 1000 J of work from a motor for every 800 J of useful work done by the machine. What is the efficiency of the machine?

User Joseph Smith
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1 Answer

11 votes
11 votes

Answer:

80%

Step-by-step explanation:


efficiency = (useful \: work \: done)/(total \: energy \: input)

800 / 1000 = 0.8

Efficiency = 0.8 *100 = 80%

User KingErroneous
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