A bob of mass 0.1 kg hung from the ceiling of a room by a string 2 m

1.	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 (a) at one of its extreme positions, (b) at its mean position?
Answer» (a) As the bob of simple pendulum has no velocity at, the extreme position, it will just fall down when the string is cut at extreme position. (b) At mean position, if we cut the string, the bob will have periodic path as it is having horizontal velocity.

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 (a) at one of its extreme positions, (b) at its mean position?

Answer»

(a) As the bob of simple pendulum has no velocity at, the extreme position, it will just fall down when the string is cut at extreme position.

(b) At mean position, if we cut the string, the bob will have periodic path as it is having horizontal velocity.