First slide

Friction on inclined plane of angle more than angle of repose

Question

A cube of weight 10N rests on a rough inclined plane of slope 3 in 5. The coefficient of friction is 0.6. The minimum force necessary to start the cube moving up the plane is

Moderate

A

5.4N
B

10.8N
C

2.7N
D

18N

Solution

$F = ma, F = mg (\sin θ + μ_{k} \cos θ)$

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