Physics
posted by Ed
A 46.5cm diameter disk rotates with a constant angular acceleration of 2.4 rad/s2. It starts from rest at t = 0, and a line drawn from the center of the disk to a point P on the rim of the disk makes an angle of 57.3° with the positive xaxis at this time.
(Hint: Remember the counterclockwise rule for positive angular velocity and acceleration.)
(a) Find the angular speed of the wheel at t = 2.30 s.
__ rad/s
(b) Find the linear velocity and tangential acceleration of P at t = 2.30 s.
linear velocity _____ m/s
tangential acceleration _____ m/s2
c) Find the position of P (in degrees, with respect to the positive xaxis) at t = 2.30s.
(Hint: Your answer must be between 0 and 360 degrees.)
_____°

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