A mass m attached to a spring oscillates every 2 sec. If the mass is i – McqOptions

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1.	A mass m attached to a spring oscillates every 2 sec. If the mass is increased by 2 kg, then time-period increases by 1 sec. The initial mass is [CBSE PMT 2000; AIIMS 2000; MP PET 2000; DPMT 2001; Pb. PMT 2003]
A.	1.6 kg
B.	3.9 kg
C.	9.6 kg
D.	12.6 kg
Answer» B. 3.9 kg

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