As shown in the figure a body of mass m moving vertically with speed 3 m / s hits a smooth fixed inclined plane and rebounds with a velocity v f in the horizontal direction. If angle of incline is 30 ° , the velocity v f will be

Question

As shown in the figure a body of mass m moving vertically with speed 3 m / s hits a smooth fixed inclined plane and rebounds with a velocity v f in the horizontal direction. If angle of incline is 30 ° , the velocity v f will be, 3 m/s, 3 m/s, 1 / 3 m/s, This is not possible

MARKS App · Accepted Answer

Velocity along surface remain same 3 sin 3 0 o = v f sin 6 0 o 3 × 1 2 = v f × 3 2 v f = 3 m/s

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