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A body is hangfing from a rigid support by an inextensible string of length

A body is hanging from a rigid support by an inextensible string of length l.It is struck inelastically by an identical, body of mass m with horizontal velocity v=√2g l, the tensions in the string increases just after striking by

Options

(a) mg
(b) 3 mg
(c) 2 mg
(d) None of these

Correct Answer:

2 mg

Explanation:

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