A weightless spring of length 60 cm and force constant 200 N/m is kept – McqOptions

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1.	A weightless spring of length 60 cm and force constant 200 N/m is kept straight and unstretched on a smooth horizontal table and its ends are rigidly fixed. A mass of 0.25 kg is attached at the middle of the spring and is slightly displaced along the length. The time period of the oscillation of the mass is [MP PET 2003]
A.	\[\frac{\pi }{20}s\]
B.	\[\frac{\pi }{10}s\]
C.	\[\frac{\pi }{5}s\]
D.	\[\frac{\pi }{\sqrt{200}}s\]
Answer» B. \[\frac{\pi }{10}s\]

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