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Three masses 700gm, 500gm and 400gm are ...

Three masses 700gm, 500gm and 400gm are suspended at the end of the spring and they are in equilibrium. When the 700gm mass is removed , the system oscillates with a oeriod of 3sec. When the 500gm mass is also removed , it will oscillate with a period of

A

1 sec

B

2 sec

C

3sec

D

`sqrt(12/5)`

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The correct Answer is:
B
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