Why is the angle between the force and the displacement 90o?dsptl said:How much work does an elevator motor do to lift a 500 kg elevator a height of 50 m?
attempt: W = F.S.Cos90 = 0 J
but i think its not right... Please help some1?
Well, in which direction is the force applied? And in which direction is the elevator moving?dsptl said:is tht suppose to be 0 then?
Assuming that the elevator does not accelerate, that would be correct.dsptl said:upwards...
so is tht going to something like W = mg x 50m x cos0
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