the workinput of a machine is 200j.if 40j is used to overcome friction, calculate the efficiency of the machine
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Answered by
1
Answer:
I guess the answer is 20%
Explanation:
Efficiency = (Output work/Input work)*100%
= (40/200)*100%
Then multiply 40 and 100% you get 4000%
=4000%/200
=20%
Therefore, The efficiency of the machine is 20%. I guess. If wrong then very sorry.
Answered by
1
Answer:work input=200J
work output=work input -friction .
. =200J - 40J
. =160J
Efficiency= work output/work input × 100%
. =160J/ 200J × 100%= 80%
Explanation:
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