Two small blocks of mass 2kg and 10 kg are connected through a light thread passing over a light smooth small pulley which is in the same vertical line as the edge of the table. Surface is smooth. 10kg block is at this instant 4 meter from the table edge. 2kg block at this instant was found to have velocity and acceleration of 20m/s and $5m/s^2$  downward. F is an unknown force. Assuming 10kg block doesn’t loose contact with the surface, answer the following questions