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Rigid rotation problem.

  • Thread starter LTZach
  • Start date
  • #1
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Homework Statement


A bicycle wheel has an angular acceleration of 1.4 rad/s^2. If a point on its rim has a tangential acceleration of 49 cm/s^2, what is the radius of the wheel?
Answer in units of m.


Homework Equations



ac=r*a

The Attempt at a Solution



49 cm/s^2=.49m/s^2
r=ac/a=2.8571

But the answer is wrong, where did I mess up?
 

Answers and Replies

  • #2
ehild
Homework Helper
15,477
1,854
Just to make things clear, what is ac and what is a?

ehild
 

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