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
Correct Answer: Option D
Explanation
Mechanical Advantage = V.R × Efficiency
= 5 × 0.72
= 3.6
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