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A block A of mass m1 rests on a horizont...

A block A of mass `m_1` rests on a horizontal table . A light string connected to it passes over a frictionless pulley at the edge of table and from its other end another block B of mass `m_2` is suspended . The coefficient of kinetic friction between the block and the table is `mu`. When the block A is sliding on the table the tension in the string is :

A

`((m_2 - mu _km_1)g))/(m_1+m_2)`

B

`(m_1 m_2 (1 + mu_k)g)/(m_1+m_2)`

C

`(m_1 m_2 1- mu_k)g)/(m_1+m_2)`

D

`((m_2 + mu_k m_1 )g)/(m_1+m_2)`

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