Posted by Hannah on Sunday, June 3, 2012 at 2:19pm.
The center of mass of the upper rod is at (x1,y1) =(0, 4.15)
The center of mass of the left rod is at (x2,y2) =(- 4.15, 0)
The center of mass of the lower rod is at (x3,y3) =(0, - 4.15)
L = 8.3 m
Coordinates of the center of mass of the 3-rod-system are
x =(x1•L +x2•L+x3•L)/3•L =
=(0•L-4.15•L+0•L)/3•L =
= -4.15/3 =1.38 m,
y =(y1•L +y2•L+y3•L)/3•L =
=(4.15•L + 0•L - 4.15•L)/3•L = 0.
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