Q.
Two blocks are arranged as shown in figure. Assuming the surfaces and the pulleys $P_{1}$ and $P_{2}$ are all smooth and pulleys and string are light, if the acceleration of the block $B$ is found to be $\frac{n F}{17 m} m / s ^{2}$ surface is replaced by block $C$ of mass $m$ as shown in the figure. In this case the acceleration of block $B$ is found to be $a=\frac{n F}{21 m} m / s ^{2}$. The value of $n$ is___.
Laws of Motion
Solution: