Two blocks of masses $m_1$ and $m_2$ are connected through a massless inextensible string. A block of mass $m_1$ is placed at the fixed rigid inclined surface while the block of mass $m_2$ hanging at the other end of the string, which is passing through a fixed massless  frictionless pulley shown in the figure. The coefficient of static friction between the block and the inclined plane is $0.8$. The system of masses $m_1$ and $m_2$ is released from rest. 
(Take $g = 10 m/s^2$)