How Fast Does Roller A Rotate?

[tom23]

Another Physics question??

Homework Statement

The cart shown below is pulled at a speed of 5 km/hr to the right. Determine the speed of the belt, and the rotational speed of roller A.

Please see figure attached

Homework Equations

The Attempt at a Solution

I got the speed of the belt as 0.26 m/s and rotational speed as 1.7375 rad/s. I was wondering if I got the right answer.

 

[Doc Al]

Sounds right to me.