On the Wheel of Fortune game show, a solid wheel (of radius 6.7 m and mass 10 kg) is given an initial counterclockwise angular velocity of +1.26...

On the Wheel of Fortune game show, a solid wheel (of radius 6.7 m and mass 10 kg) is given an initial counterclockwise angular velocity of +1.26 rad/s. It then smoothly slows down and stops after rotating through 3/4 of a turn.(a) Find the frictional torque that acts to stop the wheel.