Physics - NLM Question with Solution | TestHub

Two objects of mass m are connected by a thread that passes over a light, frictionless pulley as shown below. The objects are at rest. If a third object with mass m' is added on top of one of the objects, \& objects are released, the tension in the string becomes $\frac{4}{3}$ times of the initial tension. Find the value of ${\mathrm{m}}^{\prime }$