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A body of mass 10 kg is placed on a hori...

A body of mass 10 kg is placed on a horizontal wooden plank of length `0.75m`. One end of the plank is slowly raised by keeping the other end at rest on the ground, as shown in . When the other end is at a height of `0.30m`, the body begins to just slide down the plank. What is the coefficient of friction between the body and the plank ?

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Verified by Experts

Coefficient of friction `=mu`, `mu=tantheta`
`sintheta=(0.3)/(0.75)=0.4`, `theta=23.6^(@)`
`mu=tan23.6=0.44`
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