Question 68 of 172

A body of mass m hangs at one end of a string of length l, the other end of which is fixed. It is given a horizontal velocity so that the string would just reach where it makes an angle of 60° with the vertical. The tension in the string at mean position is [ISM Dhanbad 1994]

(1) 2 mg

(2) mg

(3) 3 mg

(4) 3mg