Question

In a CD player, a CD rotates from rest up to angular speed of   in a time interval, . It is necessary to calculate:

 

1. What is the angular acceleration of the disc, assuming the angular acceleration is uniform?

 

1. The angular displacement and the number of revolutions  done by the CD while coming up to speed?

 

1. If the radius of the disc is , what are the magnitudes of tangential speed and acceleration of a dust particle placed on the rim of the disc when