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January 7th, 2015, 12:20 AM  #1 
Member Joined: Dec 2014 From: Queensland Posts: 59 Thanks: 2  angular velocity
Hi I need to find the angular velocity for a car moving at 100 km/h with a wheel radius of 35 cm V=ω*r so rearranged I have ω=v/r which is ω=27.78(m/s)/.35(m) ω=79.37 (s) ?? Have I got this right or am I way off? Thanks in advance. Last edited by skipjack; January 7th, 2015 at 08:42 PM. 
January 7th, 2015, 12:50 AM  #2 
Math Team Joined: Jul 2011 From: Texas Posts: 3,031 Thanks: 1620 
$\displaystyle \omega =$ 79.4 radians/sec

January 7th, 2015, 02:09 AM  #3 
Senior Member Joined: Apr 2014 From: Glasgow Posts: 2,164 Thanks: 736 Math Focus: Physics, mathematical modelling, numerical and computational solutions 
You are correct. You just got the units wrong, which Skeeter corrected for you. 

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