Q1. On the Wheel of Fortune game show, a solid wheel (of radius 6.7 m and mass 10 kg) is given an initial counter clockwise angular velocity of +1.26 rad/s. It after that smoothly slows down and stops after rotating through 3/4 of a turn.
Find out the frictional torque that acts to stop the wheel.
Q2. A 140 g block hangs from a spring with spring constant 8.0 N/m. At t=0 s the block is 16 cm below the equilibrium point and moving upward with a speed of 89 cm/s. What is the block's oscillation frequency? What is the block's distance from equilibrium as the speed are 36 cm/s? What is block's position at t=1.0 s?