Question

A particle of mass m is tied to a light string of length l and moving in a horizontal circle of radius r with speed v as shown ,then the time period of rotation is .........​

Answer 1

Answer:

mg and T only

mg, T and an additional force of mv2/r directed inwards

mg, T and an additational force of mv2/r directed outwards

only a force mv2/r directed outward

Answer :

a