When a girl rides round the corner on her bicycle at a steady speed
(a) there is no force when she takes the turn
(b) the force on her bicycle is only her weight when she takes the turn
(c) the centripetal force is due to the friction between the tyre and the ground
(d) the force on the girl is always outwards.
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Explanation:
The direction of velocity in circular motion is at a right angle to the radius and centripetal force acts towards the center and centrifugal force outwards. Once water loses contact from the wheel at point A, centripetal force disappears and it moves in a straight line tangentially to OA which is the direction of velocity at that point due to the centrifugal force. This has got nothing to do with the speed of the cycle. Once, the water loses contact, it will move tangentially, only that the speed of linear motion will be greater because higher speeds means higher centrifugal force.
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