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2point masses of 4kg and 7kg are in motion along the same straightline with velocitics 2m/s and 3m/s .Find the speed of centre of mass of the system when both the masses are moving ( i) In same direction and (ii) In the opposite direction |
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Answer» ______________ TOTAL mass 1. centre of mass=4×2+7×3 ----------------- 4+7 =29/11=2.63 2.centre of mass =mU1-U2m ---------------- total mass =8-21\7=-13/11=-1.18
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