PhysicsSimple machinesJAMB
A pulley system with velocity ratio 4 lifts a load of 200 N with an effort of 80 N. Find its efficiency.
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Answer: D. 62.5%
MA = 200/80 = 2.5; efficiency = MA/VR × 100% = 2.5/4 × 100% = 62.5%.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.