India Site

A bob of mass 0.1 kg hung from the ceiling of a room by a string 2 m long is set into oscillation. The speed of the bob at its mean position is 1 ms-1. What is the trajectory of the bob if the string is cut when the bob is at one of its extreme positions?

(a) The velocity of the bob is zero when it is at one of its extreme positions. If the string is severed, the bob will fall vertically downward due to its weight F = mg.