Question 8. A can filled with water is revolved in a vertical circle of radius 4 metre and the water does not fall down. The time period of revolution will be (a) 4 sec (b) 10 sec (c) 8 sec (d) 1 sec Answer
Correct option is D) at the topmost position three forces will act on the water weight in the downward direction the normal reaction by a bucket in the downward direction centrifugal force in the upward direction From, the force balance so mg+N= r mv 2 for water just does not fall N≥0 so mg= r mv 2 v= √gr
