Q.

When a mass is hung by a spring, the spring stretches 6.0 cm. Determine its time period of vibration if it is then pulled down a little and released.

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a

0.58 s

b

0.98 s

c

0.49 s

d

0.39 s

answer is C.

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Detailed Solution

k=Fextx=mg0.06T=2πmk=2π0.069.8=0.49 s
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When a mass is hung by a spring, the spring stretches 6.0 cm. Determine its time period of vibration if it is then pulled down a little and released.