Concept Question. Record turntable rotates at constant angular velocity.

[balletgirl]

Homework Statement

Suppose a record turntable rotates at constant angular velocity.
a) Does a point on the rim have radial and/or tangential acceleration?
b) If the turntable's angular velocity increases uniformly, does the point have radial and/or tangential acceleration?
c) For which cases would the magnitude of either of the components of linear acceleration change?

Homework Equations

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The Attempt at a Solution

Basically, I don't understand the concepts, but I think for part b) that it has both radial and tangential acceleration... but I'm not certain

 

[tiny-tim]

Hi balletgirl!

Basically, I don't understand the concepts, but I think for part b) that it has both radial and tangential acceleration... but I'm not certain

hmm … to see what you make of the concepts, first tell us the answer to a)