Question

a bucket of water of mass 5kg is tied with a rope of length 50cm is rotated in a verticle circle if the bucketrotates 10 rotations in 1 minute calculate the maximum velocity with which it can be rotated with out spilling the water at the highest point 

Answer 1

m v² / r = m g
v = √(r g)  = (0.5 * 9.8)^1/2  = 2.21 m/sec