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bocobuff
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Homework Statement
A bicycle has wheels with a radius of 0.295 m. It accelerates uniformly and the rate of rotation of its wheels increases form 209 rpm to 265 rpm in a time of 20.7 s. What is the linear acceleration of the bicycle?
ω=angular vel. α=angular accel.
Homework Equations
rev/min*2π*1/60s= rad/s
α=Δω/Δt
arad=ω2*r
atan=r*α
atotal=√arad2+atan2
The Attempt at a Solution
First changed rpm to radian/s so ω1=21.89 radian/s and ω2=27.75 radian/s
For α=Δω/Δt=(27.75-21.89)/20.7s=0.283 radians/s2
Then got atan=0.295 m*0.283 radians/s2=0.0835 m*radians/s2
But I don't know if I should use ω1 or ω2 for the arad?? Do you use both and add them together to use for atotal or the change in arad? Also, do I have to multiply the final total accel by 2 since there are two wheels?