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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

Verified by Experts

The correct Answer is:
B
`f = (1)/(2pi) sqrt((K_(eff))/(m))`
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