Figure 9.
Figure 9 representing the forces acting on the irregular shaped bar. Where is Part B2 (Experiment 2.2 with the 2nd irregular shaped bar) First of all, will be explained how all system were set up. In the beginning iron stand was connected to the triple beam balance. Then, using light string, bar was randomly connected to the iron beam. Then two known masses hanged to the bar and fixed in position, where whole system was balanced. The Figure 10, which is above, will give the visual information about how equipment was set up.
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is the distance between string and the beginning of the bar, 
is the gravitational force of the bar, 
gravitational force of the first known mass (10g), 
is the distance between the string and the first mass, 
is the distance between the string and the second mass and 
is the distance between the COM and the beginning of the bar.
