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A block of mass 1 kg is attached to one end of a spring of force constant k = 20 N/m. The other end of the spring is attached to a fixed rigid support. This spring block system is made to oscillate on a rough horizontal surface `(mu = 0.04)`. The initial displacement of the block from the equilibrium position is a = 30 cm. How many times the block passes from the mean position before coming to rest ? `(g = 10 m//s^(2))`

A

11

B

7

C

6

D

15

Text Solution

Verified by Experts

The correct Answer is:
B
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