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A mass of 200 kg is placed on a rough in...

A mass of 200 kg is placed on a rough inclined plane of angle `30^(@)` . If coefficient of limiting friction is `1 // sqrt 3` , find the least forces in newton , acting parallel to the plane (i) to keep the mass from sliding down (ii) to move the mass up the plane.

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SL ARORA-Laws of Motion-Exercise
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