How to find Angular Speed when given frequency?

[Fernando Calvario]

Homework Statement

A floral clock in Japan has a radius of 15.5 m. If you ride a bike around the clock, making 16.0
revolutions in 4.50 min, what is your average angular speed?

Homework Equations

ω = velocity/radius ; 1 rev=2*pi rad

The Attempt at a Solution

(16 rev*2*pi rad)/270 secs = 0.372 rad/s ...Not sure about this since I don't know what to do with the r

 

[kuruman]

Hi Fernando Calvario and welcome to PF.

(16 rev*2*pi rad)/270 secs = 0.372 rad/s ...Not sure about this since I don't know what to do with the r

Do nothing with r. You have answered the question.

 

[Tom.G]

I get a slightly different answer. Where did the value of the divisor come from in your formula?

 

[Fernando Calvario]

4.5minutes*60 secs

 

[Tom.G]

Oops, my mistake. You are right.
Sorry.