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A mass of 4kg rests on a horizontal pla...

A mass of 4kg rests on a horizontal plane the plane is gradually inclined unitl at an angle =15 with the horizontal the mass just begins to slide what is the coefficient of static friction bwtween the block and the surface

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Here `theta =15^(@)` is the angle of repose
`mu = tan theta = tan 15^(@) =0.27`
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