Physics Help Forum How to I find Angular Speed

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 Mar 4th 2010, 05:00 PM #1 Member   Join Date: Nov 2009 Posts: 94 How to I find Angular Speed Hi, Tire(wheel) on a car travelling 60 km/hr has a diameter of 45.0cm. What is the angular speed?? So we use w=theta / time. But how do you find radians in this? for the angular speed?? NEED HELP, last problem to work out on my home work. Thanks for your help and please show all work so I can understand. Joanne
 Mar 9th 2010, 06:47 AM #2 Senior Member   Join Date: Dec 2008 Location: Udupi, Karnataka, India Posts: 292 Angular velocity ω = v/r. convert km/hr to m/s. write τηε radius in meter. Put them in the above equation to get ω.

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