1.

Mass m is connected with an ideal spring of natural length l whose other end is fixed on a smooth horizontal table. Initially spring is in its natural length. Mass m is given a velocity 'v' perpendicular to the spring and released. The velocity perpendicular to the spring when its length is, will be

Answer»

`("2vl")/(L+x)`
`(2V^(2)l)/(l+x)`
`(VL)/(l+x)`
zero

Answer :C


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