Question

In the shown arrangement if $f_1,f_2$ and $T$ be the frictional forces on $2\text{kg}$ block, $3\text{kg}$ block and tension in the string respectively, then their values are

• A. $2\text{N},6\text{N},3.2\text{N}$
• B. $2\text{N},6\text{N},0\text{N}$
• C. $1\text{N},6\text{N},2\text{N}$
• D. Data insufficient to calculate the required values

Answer 1

The correct option is C $1\text{N},6\text{N},2\text{N}$

FBD of blocks is shown
Net force without friction on system is $7\text{N}$ towards right side, so maximum friction will first come on $3\text{kg}$ block
$\Rightarrow f_1=1\text{N},f_2=6\text{N},T=2\text{N}$
Hence, the correct answer is (c).