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A block of mass m1 resting on a friction...

A block of mass `m_1` resting on a frictionless horizontal surface is connected to a spring of spring constant k that is anchored in a near by wall. A block of mass `m_2` is placed on the top of the first block. The coefficient of static friction between the two blocks is `mu` Assuming that the two blocks move together as a unit, find the period of oscillation of the system and also find maximum oscillation amplitude that permits the two bodies to move as a unit.

A

2`pisqrt ((m_1 + m_2)/k)`, `(mum_2g)`/k

B

2`pisqrt ((m_1 + m_2)/k)`, `(mum_1g)`/k

C

2`pisqrt ((m_1 + m_2)/k)`,`(mu(m_1+ m_2))`/k

D

2`pisqrt ((m_1 + m_2)/k)`, `(mug(m_1+ m_2))`/k

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