Friday, May 8, 2015
EJSS gravity 02_1
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 kGM2x2.
What is the value of k?
A 0.22 B 0.50 C 0.67 D 2.0