# The period of circular motion

1. Mar 27, 2009

### eaw07

1. The problem statement, all variables and given/known data
Alpha particles (charge= +2e, mass= 6.68*10-27kg) are acclerated in a cyclotron to a final orbit radius of .30 m. THe magnetic field in the cyclotron is .80 T. The period of circular motion is?

2. Relevant equations

f=1/T
F=qvbsin$$\alpha$$
There might be more!

3. The attempt at a solution

2. Mar 27, 2009

### LowlyPion

Welcome to PF.

Don't you want to consider the effect of centripetal acceleration?

Won't mv2/R = qv X B yield your velocity and from that you can figure how long to make 1 revolution?