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21-03-2022
Physics

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a slope of length 50m rises to height of 10m above the ground .An effort of 100N is needed to push a 250N object up the ramp.calculate a.AMA b.VR c.efficiency

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21-03-2022

Answer:

Actual mechanical advantage = force out / force in

250 N / 100 N = 2.5 force out is 2.5 X force provided

250 N * 10 m = 2500 Joules work output

100 N * 50 m = 5000 Joules work input

Efficiency is 2500 / 5000 = 50 %

Not sure what is meant by VR

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