- Parent Category: 02 Newtonian Mechanics
- Category: 08 Gravity
- Created: Thursday, 20 August 2015 15:00
- Last Updated: Thursday, 25 May 2017 13:45
- Published: Thursday, 14 April 2016 15:00
- Hits: 5337
7.1.5 Example (N09/I/16) Binary Stars
Two stars of mass M and 2M, at a distance 3x apart, rotate in circles about their common centre of mass O.
The gravitational force acting on the stars can be written as .
What is the value of k?
A 0.22 B 0.50 C 0.67 D 2.0
18.104.22.168 Model: You may view the movement of the two stars using the EJSS below link (require internet) or just below:
|with best with||Chrome||Chrome||Chrome||Chrome|
|support full-screen?||Yes. Chrome/Opera No. Firefox/ Samsung Internet||Not yet||Yes||Yes|
Fu-Kwun Hwang - Dept. of Physics,National Taiwan normal Univ.; Loo Kang Wee; Wolfgang Christian