A horizontal force F = 40 N pulls on block 1 connected to another block over a pulley ofr = 0.2 m with an ideal string as shown in the figure. Block 1 is moving to the left with a constant acceleration of 0.5 m/s2. Given that the m1 = 5kg, m2 = 3kg, find the moment of inertia of the pulley 4,