Circular double stars

[Fu-Kwun Hwang]

This is a simulation for a double stars system in circular motion.

Assume the mass for stars are M,m.
The density is assume to be the same for both stars, so the radius for M will change when M is changed.
The distance between star is d,

The radius for the circular motion are r and d-r,
where $M\, r=(d-r)\,m$ , and $\frac{GMm}{d^2}=M\,r w^2=m(d-r) w^2$

The black dot is the center of mass (CM) for the binary stars ststem.

Embed a running copy of this simulation
<applet code='users.ntnu.fkh.doublestars_pkg.doublestarsApplet.class' archive='http://www.phy.ntnu.edu.tw/ntnujava/ejsuser/2/ejs_doublestars.jar' name='doublestars8086' id='doublestars8086' width='543' height='476' mayscript=true><param name='draggable' value='true'></applet>
Embed a running copy link(show simulation in a popuped window)
<a href='http://www.phy.ntnu.edu.tw/ntnujava/msg.php?smfejs=8086' target='smfejs'>Run simulation</a>

Full screen applet or Press the Alt key and the left mouse button to drag the applet off the browser and onto the desktop. This work is licensed under a Creative Commons Attribution 2.5 Taiwan License

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