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Q.

If a spring has time period ‘T’ and cut into ‘n’ equal parts then the time period of each part will be

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a

Tn

b

Tn

c

nT

d

T

answer is B.

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Detailed Solution

 

mass spring attached to a spring time period =T=2πmk---(1) if a spring is cut into n equal parts then new spring constant of each part k1=nk time period of each part =T1=2πmk1=2πmnk----(2) divide eqn (2) by (1)  T1T=2πmnk2πmk T1T=1n T1=Tn  

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