A CD is spinning on a CD player. You open the CD player to change out the disk and notice that the CD comes to rest after 15 revolutions with a constant deceleration of 120 rad/s^2. What was the initial angular speed of the CD?
Added by John H.
Step 1
Step 1: Use the equation for rotational kinematics: \[ \omega_f^2 = \omega_i^2 + 2 \alpha \Delta \theta \] Show more…
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