Q.

A spring is stretched by 0.20 m, when a mass of 0.50 kg is suspended. When a mass of 0.25 kg is suspended, then its period of oscillation will be  (g=10m/s2)

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a

0.328 sec

b

0.628 sec

c

0.137 sec

d

1.00 sec

answer is B.

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Detailed Solution

Force constant  k=Fx=0.5×100.2=25​ N/mNow T=2πmk=2π0.2525=0.628sec
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A spring is stretched by 0.20 m, when a mass of 0.50 kg is suspended. When a mass of 0.25 kg is suspended, then its period of oscillation will be  (g=10m/s2)