Object 2

In this object we need to find the centre of mass of the two irregular shaped bars. To find the COM we need to use at least two known masses. As the two known masses, will be used masses of the 10g and 50g.Hence, there will did 4 experiments. First of all, will be explained how each experiment was set up. Then will be shown the Table, which include the raw data during the experiment.

Part A (Experiment 1.1 with the 1^st 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 4, which is above, will give the visual information about how equipment was set up.

Figure 4.

 10g mass

50g mass 

String

Figure 4, shows set up of equipment, but does not show the forces acting on this bar.

Figure 5.

String 

Figure 5, which is above, is shows Free Body Diagram of this bar. Tension force did not shown, because system already in equilibrium.

Where, is the mass of the bar, is distance between string and the beginning of the bar, is a distance between string and , is a distance between string and and is a distance between centre of mass of the bar and the beginning of the bar.

9	Adil Rgaibek SBC-11-1073 Group: ME Tut-4