Question

In fig 46, a girl is riding a bicycle. When the wheel of the bicycle passes over water present on the ground, the water flies off the wheel at point A and hits her back. The path AB of the water is

• A. A line making obtuse angle with the radius OA
• B. A line making acute angle with the radius OA
• C. A line making a right angle with the radius OA
• D. The direction of centripetal force acting on the wheel.

Answer 1

The correct option is C A line making a right angle with the radius OA

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.