Physics-
General
Easy
Question
The tube AC forms a quarter circle in a vertical plane. The ball B has an area of cross–section slightly smaller than that of the tube and can move without friction through it. B is placed at A and displaced slightly. It will
- always be in contact with the inner wall of the tube
- always be in contact with the outer wall of the tube
- initially be in contact with the inner wall and later with the outer wall
- initially be in contact with the outer wall and later with the inner wall
The correct answer is: initially be in contact with the inner wall and later with the outer wall
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