A bob of heavy mass m is suspended by a light string of length l. The bob is given a horizontal velocity v

A bob of heavy mass m is suspended by a light string of length l. The bob is given a horizontal velocity v0 as shown in figure. If the string gets slack at some point P making an angle θ from the horizontal, the ratio of the speed v of the bob at point P to its initial speed v0 is:         

                                                                  (NEET-2025)