All surfaces shown in figure are assumed to be frictionless and the pulleys and the string are light. The acceleration of the block of mass $2 \mathrm{~kg}$ is :
$g$
$\frac{g}{3}$
$\frac{g}{2}$
$\frac{g}{4}$
Three blocks $A, B$ and $C$ are suspended as shown in the figure. Mass of each blocks $A$ and $C$ is $m$. If system is in equilibrium and mass of $B$ is $M$, then :
A balloon of mass $m$ is descending down with an acceleration $\frac{g}{2}$. How much mass should be removed from it so that it starts moving up with same acceleration?
A man is slipping on a frictionless inclined plane and a bag falls down from the same height. Then the velocity of both is related as
In the figure shown the velocity of different blocks is shown. The velocity of $C$ is ......... $m/s$