How do I find tangential acceleration?

[Loppyfoot]

Homework Statement

You are designing a centrifuge to spin at a rate of 15,180 rev/min.
(a) Calculate the maximum centripetal acceleration that a test-tube sample held in the centrifuge arm 15.2 cm from the rotation axis must withstand.
I found (a) by the formula v²/r and got approximately 382111m/s² for the centripetal acceleration.

(b) It takes 1 min, 14 s for the centrifuge to spin up to its maximum rate of revolution from rest. Calculate the magnitude of the tangential acceleration of the centrifuge while it is spinning up, assuming that the tangential acceleration is constant.

How do I find the tangential acceleration? I know that it is dv/dt, but how do I implement this equation into the problem?

Thanks

 

[Redbelly98]

(a) looks good.

Tangential acceleration is the rate of change of speed .