1.A 0.650kg ball with a diameter of 12cm begins at rest and rolls down an incline. The angular

acceleration of the ball is a constant 0.55rad/s^2 . 

( I ball= 2/5 mr ^2 )

a. Calculate the net torque on the ball.

b. Calculate the angular velocity after the ball has rolled for 3.0s.

c. Calculate the rotational kinetic energy of the ball after it has rolled for 3.0s.

d. Calculate the angular momentum of the ball after it has rolled for 3.0s.

2 .A 175g frisbee, with a diameter of 21cm, spins at a constant rate of 7.0 revolutions every 

second. 

a.Calculate the magnitude of the angular velocity of a point 2.0cm from the center of the 

frisbee (in rad/s).

b. Calculate the magnitude of the angular velocity of a point on the outer edge of the

frisbee (in rad/s).

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