1.

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 [MH CET 2001]

A. \[\frac{1}{7}\]sec
B. 1 sec
C. \[\frac{2\pi }{7}\]sec
D. \[\frac{2}{3\pi }\]sec
Answer» D. \[\frac{2}{3\pi }\]sec


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