Rotating disk and its dynamical parameters

[James F]

Hey all,

I have a question that I am trying to figure out. It is more qualitative than anything, but I am concerned with the concepts that are involved in a scenario like this.

Suppose we have a rotating disk with the plane of the disk perpendicular to the z-axis. Now we send a particle upward in the z-axis direction away from the plane of the disk. What would the particle experience and effect? We should consider situations with and without gravity.

I first thought rotating frames so the Coriolis effect, but then also considered centripetal. How would the effect of gravity change either one of these component, and for that matter how would gravity change the situation at all?

Thanks for any response!

 

[Bystander]

"Completed masters" in what field?

Have you looked at the "free body diagrams" for the various cases?

 

[James F]

"Completed masters" in what field?

Have you looked at the "free body diagrams" for the various cases?

For free body diagrams I have not considered them for the rotating frames, but I would assume the acceleration would take on Coriolis and centrifugal components.

 

[Ibix]

You don't have to work in a rotating frame at all. It's possible to do everything in a standard inertial frame and then transform the results at the end. Depending on what you want to do, this might be the easiest way to go about it.