What is the tangential acceleration of a point on the outer rim of the disk?

Bdle

New member
A compact disk, which has a diameter of 12.0 cm, speeds up uniformly from zero to 4.50 rev/s in 2.80 s.

a.) What is the tangential acceleration of a point on the outer rim of the disk at the moment when its angular speed is 2.00 rev/s?

b.)What is the tangential acceleration of a point on the outer rim of the disk at the moment when its angular speed is 3.00 rev/s ?

Can someone please work this problem out step by step so that I can better understand. Thanks!
 
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