Two identical spheres P and Q lie on a smooth horizontal circular groove at opposite ends of a diameter. P is projected along the groove and at the end of time t
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Two identical spheres P and Q lie on a smooth horizontal circular groove at opposite ends of a diameter. P is projected along the groove and at the end of time t, it impinges on Q . If e is the coefficient of restitution, the second impact will occur after a shortest time of it [...]