Introductory Uniformly Angularly Accelerated Motion Problem - A CD Player

The video tutorial covers the calculation of angular acceleration for a compact disk that slows to a stop. It begins with the problem statement and proceeds to convert revolutions to radians. The tutorial then calculates the initial angular velocity using uniformly angular accelerated motion equations. A debate ensues on which equation to use, leading to a derivation that shows both methods are equivalent. The final solution for angular acceleration is presented, followed by a conclusion.

What is the first step in solving the problem of angular acceleration for the compact disk?

• Determine the mass of the disk

• Convert revolutions to degrees

• Convert revolutions to radians

• Find the final angular velocity

Which equation is used to find the initial angular velocity of the disk?

• Angular acceleration equals change in angular velocity over time

• Angular displacement equals angular velocity final times time

• Angular velocity final equals angular velocity initial plus angular acceleration times time

• Angular displacement equals half the sum of initial and final angular velocities times time

What is the calculated initial angular velocity of the disk in radians per second?

• 6.5

• 17.9915

• 3.25

• 0

What is the correct definition of angular acceleration?

• Sum of initial and final angular velocities

• Product of angular velocity and time

• Change in angular position over time

• Change in angular velocity over time

What is the final angular acceleration of the disk in radians per second squared?

• 7.93

• 17.99

• -7.93

• 0