Wow - I guess there aren't many Astrophysicists reading this forum. :( I seemed to have found some answers on my own without resorting to cornering a very busy professor at my local college. :) For those interested in this subject, particularly what's involved in rendering the approximate...
I just found something interesting - there's an article about Finding the Radius of a Star, and in it is a nice table relating the B-V color index to the star's Temperature. Since my data set includes the B-V values of each star, why can I not derive the temperature directly from this value...
Thank you for the equation and the great link - looks like it has a nice table there for the common spectral classes. I noticed there's a numeric range that can follow afterwards: 0 being hottest, and 9 the coolest. Is this a linear correlation? For example, for a G class star, the range is...
I have a data set of 120k star systems that I'd like to import into a project, and, while it has a lot of useful infomation, I'd like to display these stars in a visual fashion. This means that I need to figure out the radius, when zoomed into the star system, and its mass, to simulate objects...
Thank you for giving this thread back some life! :) I still do have an interest in it.
FYI - I took a hard look at a copy of my Statics book a while back and put together this possible solution (see the attached PDF for review). I didn't have room to show all my calculations, but the basic...
Please allow me to re-state the problem.
I had searched the web again, this time for frictional torque, but I still couldn't find what I needed. Most of the examples I saw were experiments where the outcomes of the system's motion had already been measured, and the frictional torque was...
Frictional torque may be the more correct term, assuming it describes the friction between the wheel and its axle (not to be confused with, say inertia). At the very least, it will give me more keywords to search on the web. Thank you. :)
I understand about torque - the net torque on the wheel is only one of the forces on the wheel's angular motion in the simulation. Another force acting on the wheel is the resistance of friction as the wheel grinds around the central axle. It's this resistance I need to calculate, the axle...
berkeman:
Thank you for the welcome on board! Yes, the basic "sliding" friction equation is the one I had incorrectly applied to my model. I have an old Statics textbook from college that I had many years ago, and I remember specifically it had an already laid-out equation for my particular...
I've been working on a simulation of a Lorenz Waterwheel, and friction was killing it - I couldn't use realistic coefficients of friction. The problem, I discovered was that I was not using the correct equation to calculate the force of friction that counters the wheel's rotation. Having...