A 45.3-cm diameter disk rotates with a constant angular acceleration of 2.30 rad/s2. It starts from...

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Physics

A 45.3-cm diameter disk rotates with a constant angularacceleration of 2.30 rad/s². It starts from rest att = 0, and a line drawn from the center of the disk to apoint P on the rim of the disk makes an angle of 57.3Â°with the positive x-axis at this time.
(a) Find the angular speed of the wheel at t = 2.30s
5.26 (correct) rad/s
(b) Find the linear velocity and tangential acceleration ofP at t = 2.30 s.
linear velocity- ? m/s
tangential acceleration- ? m/s²
(c) Find the position of P (in degrees, with respect tothe positive x-axis) at t = 2.30s.
^? Â°

Answer & Explanation Solved by verified expert

3.9 Ratings (422 Votes)

Answer a We need to find the final angular speed w of the wheel att 230 secSo final angular speed initial angular speed angular acceleration timetas it is given that the disc starts fro rest so initial angularspeed will be zero therefore0 230 rads2 230 sec529radsec Answer aSince the angular speedis positive that See Answer

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