Procedure: 1.) Adjust mobile masses so that the laser pointer strikes the scale at zero.
2.) Move the fixed masses into place.
3.) Allow the mobile masses to reach equilibrium.
4.) Record the distance.
5.) Determine the force from the scale.
6.) Tabulate your data and repeat.
Data: Mobile Mass: 3.125 kg
Fixed Mass: 9.588 kg
The Force VS the Distance, the Reciprocal of the Distance and the Square Reciprocal of the Distance
Analysis: Graph the data and use curve straightening techniques to prepare a line graph. Derive the value for G from the straightened line graph. Determine the accuracy of G by comparing it to the theoretical value.
Before curve straightening techniques:
After applying curve straightening techniques:
Derive the value for G from the slope of the linear graph.
Determine the accuracy (percentage difference) of G by comparing it to the theoretical value.
Evaluation: There is a 0.00117% error in this lab. This difference could be due to the inaccuracy of the experiment performed and equipment used. Factors such as wind or other objects could have affected the amount of torsion in the wire. There is also the factor of uncertainties by human calculations. However, we were not responsible for the data provided, and as such, cannot assume that these factors were responsible.
