PhysicsSimple machinesWAEC
A pulley system of velocity ratio 3 lifts a load of 300 N with an effort of 125 N. Find its efficiency.
Show answer
Answer: B. 80%
MA = 300/125 = 2.4; 2.4/3 = 80%.
An AdmitMe practice question, written for the WAEC syllabus. Not an official past question.