Working on #10 in the picture, I'm stuck on the steps, could you please explain more? Thank you

9. Flywheels are large, massive wheels used to store energy. They can be spun up slowly then the 75 m wheel's energy can be released quickly to accomplish a task that demands high power. An industrial radius flywheel has a 1.5m-diameter and a mass of 250 kg. A motor spins up the flywheel with a constant torque of 50 Nm. How long does it take the flywheel to reach top angular speed of 1200 rpm? I= = my I = =( 250)1. 75) +- 50 Nm. 716905 / 1200 - a+ (.71)+ - 70.31 T = 70, 31(0 ) X = 171 : 71 50 = 20. 310 1690. 14 : T 10. 70.31 1.5 kg block and a 2.5 kg block are attached to opposite ends of a light rope. The rope hangs over a solid frictionless pulley that is 30 cm in diameter and has a mass of 0.75 kg. When the blocks are released, what is the acceleration of the lighter block? z. 5 - m =. 75 R ( Fg z - mzd ) R-( m, 9+ Fg, )R DFT, 1 FT, a TR-T, R - IQR) 1.5 2.5 Fq extra T, - Fg, = m, a credit Ty -T1= IS Fq T2 = mza J= tmp