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?
- 36.0
- 7.2
- 5.0
-
3.6
The correct answer is: D
Explanation
Mechanical Advantage = V.R × Efficiency
= 5 × 0.72
= 3.6
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