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A machine has an efficiency of 80%. How much work must be done on the machine so to make it do 50,000 J of output work? 12,500 J 40,000 J 62,500 J 90,000 J
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4 votes
A machine has an efficiency of 80%. How much work must be done on the machine so to make it do 50,000 J of

output work?
12,500 J
40,000 J
62,500 J
90,000 J

User Vkopio
by
6.6k points

1 Answer

5 votes

Answer:

62,500 J

Step-by-step explanation:

50,000/0.8=62,500

User Peuge
by
7.4k points
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