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Four mass less spring whose force consta...

Four mass less spring whose force constant are `2k , 2k, k` and `2k` respectively are attached to a mass `M` kept on a friction less plate (as shown in figure) if the mass `M` is displaced in the horizontal direction then the frequency of oscillation of the system is

A

`1/(2pi)sqrt(k )/(4M)`

B

`1/(2pi)sqrt(4k)/(M)`

C

`1/(2pi)sqrt(k)/(7M)`

D

`1/(2pi)sqrt(7k)/(M)`

Text Solution

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The correct Answer is:
B
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