A particle attached to a string is projected from the lowest point of a vertical circle of radius R with speed 2√(gR). What happens before it reaches the highest point?
Options

Question

A particle attached to a string is projected from the lowest point of a vertical circle of radius R with speed 2√(gR). What happens before it reaches the highest point?

G1 Physics · Accepted Answer

Initial v_B²=4gR, less than the 5gR required to maintain tautness throughout. The particle rises, but the tension becomes zero before the top and the string goes slack.