A small rubber wheel is used to drive a large pottery wheel, and they are mounted so that their circular edges touch. The small wheel has a radius of 2.0cm and accelerates at the rate of 7.2rad/s^2 and it is in contact with the pottery wheel (radius 25.0cm) without slipping. Calculate:(adsbygoogle = window.adsbygoogle || []).push({});

a) the angular acceleration of the pottery wheel

b) the time it takes the pottery wheel to reach its required speed of 65rpm

My approach:

What I can determine with the rubber wheel:

0.02m = r

7.2 rad/s^2 = angular acc

Atan= (0.02)(7.2) = .144 m/s^2

I think the Atan is the radial acceleration for the pottery wheel but I'm not sure.

If I can get the angular acceleration I can solve for t using Wot + 1/2 (angular acceleration) t^2 = theta ( I think).

If I assumed Atan was the radial acceleration I attempted to solve for w in Radial Acceleration= w^2r w = 0.76m/s

I'm not sure what to think of my approach. The key is what type of acceleration is transferred from the rubber wheel to the pottery wheel?

Thanks in advance. This forum is great!

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

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: Rubber wheel (angular acceleration)

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