First slide

Friction on inclined plane of angle more than angle of repose

Question

The angle of inclination of an inclined plane is 60º. Coefficient of friction between 10kg body on it and its surface is 0.2, g = 10 ms^–2. The acceleration of the body down the plane in ms^–2 is

Easy

A

5.667
B

6.66
C

7.66
D

Zero

Solution

$F = ma, a = g (\sin θ - μ_{K} \cos θ)$

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