A pulley system has three pulleys in the fixed block and two in the movable block and if the pulley has an efficiency of 72%, the mechanical advantage of the system is?
a
36.0
b
7.2
c
5.0
d
3.6
Explanation
Correct Option
dVideo Explanation
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ALEX8876
5 years ago
from efficiency formula;
EFF=MA/VR*100%
SO,VR=5,MA=?,EFF=72
72=MA/5*100%
MA=72*5/100
MA=3.6
