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Questions  

In figure S1 and S2 are identical springs. The oscillation frequency of the mass m is f. If one spring is removed, the frequency will become

 

a
f
b
2f
c
f2
d
f2

detailed solution

Correct option is D

Effective force constant Keff = 2K.f = 12π2KaWhen one spring is removed, Keff becomes K new frequencyf' = 12πKmf'f = 12   ⇒f' = f2

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Two springs of spring constants k1 and k2 are joined in series. The effective spring constant of the-combination is given by:


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