# Homework Help: Explaination - Cent. Acceleration and Tangential Acceleration,

1. Jun 7, 2009

### grandprix

1. The problem statement, all variables and given/known data
Two formula on racing cars are negotiating a circular turn, and they have the same cent. acceleration. However, the path of car A has a radius of 48 m, while that of car B is 36 m. Determine the ration of angular sped of car A to the angular speed of car B.
2. Relevant equations
v2 = $$\omega$$2 + r2

acent = v2/r
3. The attempt at a solution
so somehow i got the right answer by taking the square root of (3/4). Basically i am wondering if someone could help me go through the algebra to get the final result.

Thanks
1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

2. Jun 7, 2009

### grandprix

actually i know how to do the algbra what i meant to ask was why is it th squareroot of (3/4) and not (4/3)

3. Jun 7, 2009

### rock.freak667

$$F=\omega^2 r$$

$$F_A=\omega_A^2 r_A$$

$$F_B=\omega_B^2 r_B$$

rA=48
rB=36

You want to get wA/wB.

Since FA=FB => FA/FB=1

Does this help showing how to get the answer?

4. Jun 7, 2009

### grandprix

yes! :) thanks very much!!