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  4. Two bodies of mass 4 kg and 6 kg are tied to the ends of a massless string. The string passes over a pulley which is frictionless (see figure). The acceleration of the system in terms of acceleration due to gravity (g) is :

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Q. Two bodies of mass $4\,kg$ and $6\,kg$ are tied to the ends of a massless string. The string passes over a pulley which is frictionless (see figure). The acceleration of the system in terms of acceleration due to gravity (g) is :Physics Question Image

NEETNEET 2020Laws of Motion

Solution:

The acceleration of the system $a=\frac{\left(m_{2}-m_{1}\right)g}{m_{1}+m_{2}}$ where $m_{2}>\,m_{1}$
$a=\frac{(6-4)g}{6+4}$
$=\frac{2g}{10}$
$a=\frac{g}{5}$