Angular Acc. Homework: Calculate Centripetal & Angular Acc.

[Jam51]

Homework Statement

An airplane makes a circular turn of radius 9 km at a constant speed of 650 km/h. Calculate the magnitude of the plane's a. angular velocity, b. centripetal acceleration, c. angular acceleration, d. tangential acceleration

Homework Equations

w = v/r
aR = w^2r

The Attempt at a Solution

I found angular velocity to be 0.02rad/s and centripetal acceleration to be 3.62m/s^2

If the speed is constant would the angular and tangential acceleration be zero? I'm not sure that I am understanding the theory behind this.

 

[BvU]

Definitely . Angular acceleration $\alpha = {\Delta \omega\over \Delta t} = 0$ for constant angular velocity $\omega$.
And tangetial acceleration is $\alpha r$; both are constant in your exercise. On to the next one !

 

[Jam51]

Thanks