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

Given  T1=T , force constant isK1=Kforce constant of each spring after cutting into n parts isK2=nKtime period of mass attached to cut springT2=?time period of mass attached to a spring is T =2πmk T1α1K1 T2α1K2  T1T2=K2K1TT2=nKKTT2=n1⇒T2=Tn
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