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Three identical discs A, B, and C (Fig. 1.45) rest on a smooth horizontal plane. The disc A is set in motion with velocity v after which it experiences an elastic collision simultaneously with the discs B and C. The distance between the centres of the latter discs prior to the collision is ri times greater than the diameter of each disc. Find the velocity of the disc A after the collision. At what value of rl will the disc A recoil after the collision; stop; move on? |
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