the man of mass m and the woman of mass m2 are standing on opposite en
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The man of mass m, and the woman of mass m2 are standing on opposite ends of the platform of mass m(2) which moves with negligible friction and is initially
at rest with s =0. The man and woman begin to approach each other. Derive an expression for the displacement s of the platform when the two meeting terms of the displacement x1 of the man relative to the platform.