(chatquestion)...261 ATTA- KAY PIHYSICS Question 2 A lifting machine has a velocity ratio of 4 and can lift a load of 100kg when the effort applied is 327N. II acceleration due to gravity is 10ms, find the (a) efficiency (b) effort required to overcome friction. (c) work done against friction when the load is lifted through a distance of 2m.

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