The diagram above is a block and tackle pulley system in which an effort of 80N is use to lift a load of 240N. The efficiency of the machine is
a
60%
b
50%
c
40%
d
33%
Explanation
Correct Option
bVideo Explanation
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The diagram above is a block and tackle pulley system in which an effort of 80N is use to lift a load of 240N. The efficiency of the machine is
60%
50%
40%
33%
