what is the efficiency of the machine,if a load 1200kg is lifted a simple machine having a velocity ration of 5 and effort applied is 300kg ?
(a) 60% (b) 70% (c) 80% (d) 90%
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Step-by-step explanation: M.A = load/effort =4
efficiency =M.A/V.R=4/5=80%
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