A light string passing over a smooth light pulley connects two block of masses $m_1$ and $m_2$ (vertically). If the acceleration of the system is $(\frac {g}{8})$, then the ratio of masses is
$8 : 1$
$9 : 7$
$4 : 3$
$5 : 3$
A balloon with mass $'m'$ is descending down with an acceleration $'a'$ (where $a < g$ ). How much mass should be removed from it so that it starts moving up with an acceleration $'a'$ ?
Which of the following is self adjusting force?
The acceleration of $10\,kg$ block when $F =30\,N$
A block of mass $m$ is released on a smooth inclined plarie of inclination $\theta$ with the horizontal. The force exerted by the plane on the block has a magnitude
In the arrangement shown in figure, pulley is smooth and massles and all the strings are light let $F_1$ be the force exerted on the pulley in case $(i)$ and $F_2$ the force in case $(ii)$. Then