question_answer

One end of a string of length L is connected to a particle of mass M and the other to a small peg on a smooth horizontal table. If the particle moves in a circle with a speed v, the net force, directed towards the centre, on the particle is

A)  \[T+\frac{M{{v}^{2}}}{L}\]                          

B)  \[T\]

C)  \[T-\frac{M{{v}^{2}}}{L}\]                           

D)  Zero

Correct Answer: B

Solution :

                 Therefore, the net force on the particle directed towards the centre is T.