Two blocks are connected by a string with negligible mass that passes over a pulley with nonzero rotational inertia I, as shown above. The axle of the pulley has negligible friction. The string does not slip on the pulley. Block 1 has mass 4kg and block 2 has mass 6kg. An additional force with magnitude F is initially exerted on block 1 so that the blocks do not move and is then removed.