Centripetal Acceleration HELP

  • #1
Sucks@Physics
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0
What is the centripetal acceleration of a point on the perimeter of a bicycle wheel of diameter 70 cm when the bike is moving 7.0m/s?

I thought the formula was v^2/r =ac

But when I do that i get 1.4m/s^2 and it is not the right answer. Can someone tell me what I'm doing wrong, or if I've used the wrong formula? Thanks
 

Answers and Replies

  • #2
Doc Al
Mentor
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1,876
Realize that the diameter is given in cm. Change to meters.
 
  • #3
Sucks@Physics
76
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I did. (7m/s)^2/.35m = 140m/s
 
  • #4
Sucks@Physics
76
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Sorry that was supposed to be 1.4x10^2 in the first post
 
  • #5
Doc Al
Mentor
45,425
1,876
Sorry that was supposed to be 1.4x10^2 in the first post
I don't see anything wrong with that answer, assuming you gave proper units.
 

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