a bob of mass m is suspended by a light string of length l.it is imparted a horizontal velocity V0 at the lowest point a such that it completes a semicircular trajectory in a vertical plane with the spring becoming slack only on reaching the topmost point c.obtain an expression for
(1) v0
(2) the speeds at point b&c
(3) the ratio of kinetic energies(Kb/Kc)at b&c.
comment on the nature of the trajectory of the bob after it reaches the point c.
