A bob of mass 0.1kg hung from the ceiling of a room by a string 2m long is set into oscillation.
A bob of mass 0.1kg hung from the ceiling of a room by a string 2m long is set into oscillation. The speed of the bob at its mean position is 1ms-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.
2 Answers
(a) The velocity of the bob at its extreme position is zero. However when the string is cut,it will fall down vertically.
(b) When the bob is in the mean position,its horizontal component of velocity=1m/s So the bob will trace a parabolic path as a projectile.
(a) At the extremen position, the speed ofthe bob is zero. If the string is cut, it will fall vertically downwards.
(b) At themean positionm, the bob has a horizontal velocity. Ifthe string is cut, it will fall along a parabolic path.