A block of mass \( 1 \mathrm{~kg} \) is attached to one end of a spring of force constant \( k=2...

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A block of mass \( 1 \mathrm{~kg} \) is attached to one end of a spring of force constant \( k=20 \mathrm{~N} / \mathrm{m} \). 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 \( a=30 \) \( \mathrm{cm} \). How many times the block passes from the mean position before coming to rest? (Take \( g=10 \mathrm{~m} / \mathrm{s}^{2} \) )
(A) 11
(B) 7
(C) 6
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