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  • 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 (b) at its mean position.

Q5.12. 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 1ms^{-1} . What is the trajectory of the bob if the string is cut when the bob is (b) at its mean position.

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At the mean position, the bob will have velocity tangential to the circular path (it will be completely horizontal). If the bob is cut at this place then it will follow a parabolic path having only horizontal velocity.

Posted by

Devendra Khairwa

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