if 100% efficient then 60 *2/8 = 60/4 = 15 N
it actually took you 20 N
100 * 15/20 = 5*15 = 75%
For a given machine the load moves 2 m when the effort moves 8m,if an effort of 20 N is used to raise a load of 60N, what is the efficiency of the machine
3 answers
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0 answers