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A massless rod of length 3l has point masses m and 2m attached at its two ends. It is dropped with mass 2m at height h from the ground, and the rod making an angle θ with the horizontal. Find the rebound speed of the rod’s center of mass after the mass 2m hits the floor. Assume the impact to be elastic.


  1. A massless rod of length 3l has point masses m and 2m attached at its two ends. It is dropped with mass 2m at height h from the ground, and the rod making an angle θ with the horizontal. Find the rebound speed of the rod’s center of mass after the mass 2m hits the floor. Assume the impact to be elastic.

Grade:12

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