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A block of mass m lie on a horizontal sm...

A block of mass `m` lie on a horizontal smooth surface and connected with the springs at their natural length as shown in figure. When block slightly displaced then find the time period of oscillation.

A

`(pi)/(4)sqrt((m)/(7k))`

B

`2pisqrt((2m)/(5k))`

C

`3pisqrt((m)/(7k))`

D

`(pi)/(2)sqrt((m)/(7k))`

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