5.12 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 m s-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?
5.12 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 m s-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?
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1 Answer
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(a) When the bob is at extreme position, the velocity at that point is zero. If the string is cut at that location, the bob will fall because of its own weight
(b) At the mean position, if the string is cut, due to horizontal velocity, the bob will act like a projectile and will fall on the ground, following a parabolic path.
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