1.

Two Person A and B of mass 50 kg and 70 kgrespectively stand facing each other 6 metersaway from each other. They pull on a light ropestretched between them. How far has each movedwhen they meet?​

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ANSWER:

Here no any external force is applied taking two stakers A and B as a system.then center of mass of both stakers will not change therefore they meat at center of mass, taking axis as shown in figure 1.X com​  = 50+7050×0+70×6​  = 12070×6​  =3.5m   from 50kg sketers.X com​   = X-coordinate of center of mass.So      A mover 3.5cm      B mover (6 - 3.5) = 2.5m

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