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Velocity = Radius * W What is the variable w?

ac = v^2/r So Centripetal Acceleration = 3^2/30? 0.3 rev/s I don't even think this is the right equation

That's one of my problems, I have no idea what the formula is to use.

Homework Statement A circular disk of radius 30 cm is rotating with an angular acceleration of 1 radian/ s2. What is the tangential acceleration of a point on the rim of the disk? What is its centripetal acceleration if the angular speed is 3 rev / s? Homework Equations tangential...