A 0.3 m radius by XXXXXXXXXXm thick steel disk has two blades as shown in Figure 10.4 in the text. The mass density of steel is about 8000 kg/m 3 .Each blade is 1 m square by 0.05 m thick, has a mass...

A 0.3 m radius by 0.04995 m thick steel disk has two blades as shown in Figure 10.4 in the text. The mass density of steel is about 8000 kg/m³
.Each blade is 1 m square by 0.05 m thick, has a mass of 10 kg, and is subject to air resistance equal to
 4 .where
 velocity of the blade center, and
A= blade area. An electric motor applying a torque of 15N
m drives the assembly.

(a) Find the following quantities 10 seconds after the motor is started: Mechanical power supplied to the assembly and angular displacement, velocity, and acceleration of the assembly.

(b) Find the same quantities one minute after the motor is started.

(c) How long does it take the motor to reach an angular velocity of 20 rad/s?