(adsbygoogle = window.adsbygoogle || []).push({}); A disk of radius .12 m starts accelerating from rest at 8 rad/s^2 At t = 5s

A)What is the Angular Velocity

This one is easy.. Av = 8rad/s^2*5 = 40 rad/s

And makes sense.

B)What is the tangential Accel?The book gave answer of .96 m/s^s Therefor, i assumed that the equation is At = w*r w=omega which is 8 rad/s^2 * .12m = .96 m/s^2

However, later I found an equation for At given as At=dv/dt

What gives? Which equation is correct for Tangential Accel? If they are both correct then how would I use At=dv/dt?

Thanks

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Circular Rotation Question

**Physics Forums | Science Articles, Homework Help, Discussion**