When the angle of inclination of on inclined plane is θ , an object slides down with uniform velocity. If the same object is pushed up with an initial velocity u on the same inclined plane, it goes up the plane and stops at a certain distance on the plane. There after the body.

Moderate

A

Slides down the inclined plane and reaches the ground. With velocity "u"
B

Slides down the inclined plane and reaches the ground with velocity less than "u"
C

Slides down the inclined plane and reaches the ground with velocity greater than "u"
D

Stays at rest on the inclined plane and will not side down.

Solution

Since the body is sliding down the inclined surface with constant velocity.
mgsinθ = f.
In the second case , when the body stops , mgsinθ = f and the body will not have any tendency to slide down the inclined surface.

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