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You do 25 J of work while using a hammer. The hammer does 18 J of work on the nail. What is the efficiency of the hammer? physical science help please
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30 votes
30 votes
You do 25 J of work while using a hammer. The hammer does 18 J of work on the nail. What is the efficiency of the hammer?

physical science
help please

User Svager
by
2.6k points

2 Answers

7 votes
7 votes

Answer:

The efficiency of the hammer is 72%.

Step-by-step explanation:

output work/input work x 100%

18J/25J x 100%

0.72 x 100%

72%

User Herat Patel
by
2.8k points
24 votes
24 votes
72%

Formula: η = Eout / Ein * 100%
User Xeraphim
by
2.8k points
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