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A copper sphere attached to the bottom o...

A copper sphere attached to the bottom of a vertical spring is oscillating with time period 10 s. If the copper sphere is immersed in a fluid (assume the viscosity of the fluid is negligilbe) of specfic gravity `(1)/(4)` of that of the copper, then time period of the oscillation is

A

5 s

B

10 s

C

2.5 s

D

20 s

Text Solution

Verified by Experts

The correct Answer is:
B
(b) Given, time period, T =10 s
`therefore T=2pisqrt((m)/(k))`
when viscous the system is immersed in liquid with specfic gravity `(1)/(4)th` of the copper, the liquid is non-viscous , so the time period would not be changed because , there is no change in m and k.
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