In the system shown in figure m₁ > m₂. System is held at rest by thread BC.Just after the thread BC is burnt.

acceleration of m₁ will be equal to zero

acceleration of m₂ will be downwards

magnitude of accceleration of both of blocks will be $\left(\frac{{\mathrm{m}}_1-{\mathrm{m}}_2}{{\mathrm{m}}_1+{\mathrm{m}}_2}\right)\mathrm{g}$

magnitudes of acceleration of two blocks will be non- zero and unequal