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JEE Main Physics question

PhysicsSystems of Particles and Rotational MotionJEE Main

A 100 g iron ball having velocity 10 m/s collides with a wall at an angle 30° (to the wall) and rebounds with the same angle. If the period of contact between the ball and wall is 0.1 second, then the force experienced by the wall is

Answer: (A)

Solution

With the velocity making 30° with the wall surface, the component perpendicular to the wall is v sin30° = 10 × 0.5 = 5 m/s, and this component reverses on

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Question ID VK-153249