Center-of-mass of three balls
Three balls have masses and positions as follows:
- Ball 1: m1 = 1.2 kg, x1 = 0.4 m, y1 = 0.7 m.
- Ball 2: m2 = 2.1 kg, x2 = -0.4 m, y2 = 0.7 m.
- Ball 3: m3 = 1.7 kg, x3 = 0.1 m, y3 = 0.2 m.
Where is the center-of-mass of the system? How does it move if you change the mass of any of the balls?