What is the relationship between angular and linear displacement? Meaning, if the same point is examined, will it have a larger linear or angular displacement?

Question

anonymous · Answer

the angular displacement is when the degrees (radian/grad) changes. But, linear is when fro m one point to another. Both have two different but very similar formulas, so try random point. And about relationship, if it's converted to linear then probably it is related with a circle

anonymous · Answer

Thank you @SerikMB, how would i go about finding the linear speed of a point in terms of T and r from the axle? 

I know the linear equation is v=v0 + at, and r=arc length/theta. but how do I go about relating the two?

anonymous · Answer

@sam, maybe could you give me a hand with this one? I'm really stuck