Question

1. A body of mass M starts sliding down on the
inclined plane where the critical angle is
angle ACB = 30° as shown in figure. The coefficient of
kinetic friction will be

$(1). mg \div \sqrt{3} \\ \\ 2) \sqrt{3} mg \\ 3) \sqrt{3} \\ 4)none \: of \: these$


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Answer 1

Explanation:

as as the acceleration of the body will be zero you can proceed to my answer.

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Answer 2

Coefficient of friction= tangent angle of repose.

μ=tanθ

μ=tan30∘

μ=0.577

μ=√3