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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?
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2 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?

User Lannyboy
by
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2 Answers

6 votes

Answer:

62,500 Joules

Step-by-step explanation:

User Fred Chateau
by
7.2k points
4 votes
find 10 % of 50,000 = 5000
double it to make 10000
add on to 50000 to make 60000
60000 is your answer
User Saulius Valatka
by
6.7k points
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