Experimental Procedure

Apparatus:

Metre ruler, iron stand, triple beam balance, set of masses, light string, unknown masses and irregular shaped bars.

Object 1

In this object, originally, need to find the mass of the one unknown object using at least one known mass and one metre ruler, which hanged on the iron stand. In my experiment I have used two unknown masses and one known mass. As unknown masses were used pen and block, as the known mas was used mass of the 50 gram. Hence, experiment has been made two times to get enough information for determination of the unknown masses. That means in different times, objects had different places on the ruler. First of all will be shown and explain each part of the Object 1. Then, will be shown Table, which includes all raw data.

Part A (Experiment 1 explanation)

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, one metre ruler was connected to the iron stand. After that, one metre was fixed in the point 48.8cm, which is the centre of mass of the ruler. When one metre ruler was in equilibrium, I started to hang objects. One known object and pen were hanged to the right side, and block was hanged to the left side. Then I found for that objects special places, where system was in equilibrium and did not shacked or moved.

The Figure 1 below is showing how experiment was set up.

Figure 1.

ß Light String

Block à Pen à ß Mass

Figure 1 shows only how experiment was set up, but Figure 1 does not show the forces that acting on it. First of all, of solving problems with balanced system, should be used and shown the Free Body Diagram.