Homework Help: physics

Posted by Kathryn on Thursday, May 19, 2011 at 6:51pm.

A car goes around a curve on a road that is banked at an angle of 30.5 . Even though the road is slick, the car will stay on the road without any friction between its tires and the road when its speed is 19.0 .

What is the radius of the curve?

physics - bobpursley, Thursday, May 19, 2011 at 7:01pm
force up the hill=force down the hill

mv^2/r cos30.5=mg Sin30.5

solve for r.
physics - Kathryn, Thursday, May 19, 2011 at 7:10pm
plugging everything in do I get 84.15? That seems a little high...
physics - Kathryn, Thursday, May 19, 2011 at 7:12pm
nvm. i got it. 84 was wrong... thanks for your help!
physics - hopsy, Sunday, June 5, 2011 at 5:52pm
i get 62.536 when i do it. what is the answer
physics - OuBCcIRubgny, Saturday, July 2, 2011 at 2:47pm
Smack-dab what I was lokonig forty!

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