Calculating Angular Acceleration: Angular Velocity in Circular Motion

[Sucks@Physics]

James move sin a circular path (radius 15.0m) with a speed of 60 m/s. His angular acceleration in rpm is?

DO you ahve to convert to rad/s then to rev/s then rev/m?

Any help would be appreciated

 

[Shooting Star]

Do you know the relationship between angular speed and angular acceleration? Study the problem carefully.

 

[Sucks@Physics]

youw ould have to fine the arc length correct? 15x2(pi) = 94.24777. but I keep thinking i would have to have time before i can solve this problem

 

[Shooting Star]

If James is going at a constant linear speed, the angular speed is also constant. Does that mean anything?

 

[Sucks@Physics]

so divide that by 60 seconds which would give me 1.5707 rad/s. Is this correct so far?

 

[Shooting Star]

I am just wondering, have you been asked to find angular speed or acceleration?

 

[Sucks@Physics]

Angular velocity

 

[Shooting Star]

Then why did you ask for acceleration?

Well, w=v/r. Convert as you said in your first post. 1 rev/s = 2*pi rad/s.

 

[Sucks@Physics]

Sorry about that! but thanks a lot, very much appreciated!