Angular Acceleration

  • Thread starter cobrasny
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  • #1
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1. a) A X kg toy car accelerates at constant rate from Vo m/s to Vf m/s in C revolutions while going around a circular track of radius R cm. Find:

- α, the magnitude of the angular acceleration of the car.
- t, the time it took to reach the final speed




2. To calculate the angular acceleration, I tried velocity over radius, Vo/R and Vf/R to get delta W(omega); and then tried using the formula Wf2 = Wo2 + 2*alpha*(C*2*Pi), and solved for alpha, but got the wrong answer. I do not know how to get time without acceleration. Any help would be appreciated.

Homework Statement





Homework Equations





The Attempt at a Solution

 

Answers and Replies

  • #2
alphysicist
Homework Helper
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Hi cobrasny,

1. a) A X kg toy car accelerates at constant rate from Vo m/s to Vf m/s in C revolutions while going around a circular track of radius R cm. Find:

- α, the magnitude of the angular acceleration of the car.
- t, the time it took to reach the final speed




2. To calculate the angular acceleration, I tried velocity over radius, Vo/R and Vf/R to get delta W(omega); and then tried using the formula Wf2 = Wo2 + 2*alpha*(C*2*Pi), and solved for alpha, but got the wrong answer.


What answer did you get?
 

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