Q.

When a mass m is attached to a spring, it normally extends by 0.2 m. The mass m is given a slight addition extension and released, then its time period will be

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a

17sec

b

1 sec

c

2π7sec

d

23πsec

answer is C.

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Detailed Solution

Kx=mg⇒mK=xgSo T=2πmK=2πxg=2π0.29.8=2π7sec
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When a mass m is attached to a spring, it normally extends by 0.2 m. The mass m is given a slight addition extension and released, then its time period will be