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Two springs of force constants K and 2K are connected to a mass as shown below. The frequency of oscillation of the mass is 

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a
(1/2π)(K​/​m)
b
(1/2π)(2K​/​m)
c
(1/2π)(3K​/​m)
d
(1/2π)(m​/​K)

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detailed solution

Correct option is C

n=12πKeffectivem=12π(K+2K)m=12π3Km


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