A man pulls a box of mass 70kg using an inclined force of effective length 5m onto a platform 2.5m high at uniform speed. If the frictional force between the box and the plane is 100N,calculate:
1. minimum effort applied in pulling up the box.
2. mechanical advantage of the plane
3. velocity ratio of the plane.
4. efficiency of the plane.?
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Asked by Michelle on 7th February, 2022
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