Question

In the following arrangement the system is initially at rest. The 5 Kg block is now released. Assuming the pulleys and strings to be massless and smooth, the acceleration of block ‘C’ is: (take $g=9.8m/s^2)$

• A. $0.7m/s^2$
• B. $0.5m/s^2$
• C. $Zero$
• D. $0.6m/s^2$

Answer 1

The correct option is A $0.7m/s^2$

Block B will not move
From (i) and (ii)
$a=\frac{2g}{14}\Rightarrow \frac{a}{2}=\frac{9.8}{14}=0.7m/s^2$