Center of mass calculator for 3 masses on a x,y plane. example 3 planets say Earth, Venus, Mars without the Sun and no motion just position?
- Steve4PhysicsLv 71 year agoFavourite answer
m1 at position (x1, y1)
m2 at position (x2, y2)
m3 at position (x3, y3)
x coordinate of centre of mass
=(m1x1 + m2x2 + m3x3)/(m1+m2+m3)
y coordinate of centre of mass
= (m1y1 + m2y2 + m3y3)/(m1+m2+m3)
- ZardozLv 71 year ago
Draw a line between Earth and Venus. Since Earth and Venus are almost equal in mass the center of mass in at the center of the line. Now draw a line from that point to Mars. Since Mars has about 1/20th the combined mass of Earth and Venus the center of mass will be 1/20th of the length of the line from the E-V point.