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

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Solution

Q.
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 the 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 $μ_{k}$ . When the block A is sliding on the table, the tension in the string is [2015]

1 $\frac{m_{1} m_{2} (1 + μ_{k}) g}{(m_{1} + m_{2})}$

2 $\frac{m_{1} m_{2} (1 - μ_{k}) g}{(m_{1} + m_{2})}$

3 $\frac{(m_{2} + μ_{k} m_{1}) g}{(m_{1} + m_{2})}$

4 $\frac{(m_{2} - μ_{k} m_{1}) g}{(m_{1} + m_{2})}$

Ans.
(1)

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