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There particles A, B and C have masses m...

There particles A, B and C have masses m, 2m and m respectively. They lie on a smooth horizontal table connected by light inextensible strings AB and BC. The string are taut and ` lt ABC = 120^(@)`. An impulse is applied to particle A along BA so that it acquires a velocity u. Find the initial speeds of B and C.

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The correct Answer is:
`v_(B)=(2sqrt(31))/(11)u,v_(c)=(4u)/(11)`
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