A bicycle wheel 69.0 cm in diameter rotates about its central axis with constant angular acceleration of 3.50 rad/s^2 . It starts from rest at time t= 0 seconds, and a reference point on the wheel's rim P makes an angle of 30.0 degrees above the horizontal at this time. When the wheels starts rotating, at time t=4.00 s a. What is the magnitude of the tangential acceleration of the wheel's rim? b. What is the angular speed of the wheel's rim? c. What is the tangential speed of the wheel's rim? d. what is point P's new angular position from the horizontal in radians? e. At t=2.00 s, a small 85.0 gram pebble got stuck halfway from center to the edge of the wheel. What is the pebble's moment of inertia with respect to the wheel's axis of rotation? f. At t=4.00 s, what is the pebble's rotational kinetic energy