A cone filled with water is revolved in a vertical circle of radius 4 m and the water does not fall down. What must be the maximum period of revolution?

Step-by-step solution

When a cone filled with water is revolved in a vertical circle, then the velocity at the highest point is given by Also aligned & v g r & v=r w=r 2 T aligned Hence, 2 r T r g aligned T & 2 r r g =2 r g =2 4 9.8 & =2 3.14 0.6389=4.0 sec aligned So, T_ =4 sec