In this lab we began to introduce the new force of electricity between the different types of charges in the object as well. The experiments that were done because these were showing how the matter of charges interact in charge and distances and the amount of force is applied in different situations. The first experiment was the one with using strips of tape and applying charge to them and bringing them together to allow the group's to see how they interact and prove the hypothesis at the beginning. The second was a video of analysis of a hanging ball charged and another being brought closer to find the change the relationship along with the change in the angle. The equation that came out of these experiments was Coulomb's Law F=kq0q1/r^2.
 |
| This is the equipment of the experiment that was used to see the interaction of the strips once they received a charge by ripping from each other. The group saw that each strip had their own charge because each strip interacted differently with one attracting or repelling each other. |
These are the answers to the results we observed by the strips of tape experiment were in the first part we saw that they attracted to each other when brought closer increasing the attraction. In the end we had to make an experiment proving the hypothesis in the beginning of the manual after the strip experiment proved the first hypothesis.
Before the second the experiment can begin we had to find how the angle change can affect when a particle has a charge and makes an angle. We had to find the relationship between the angle and distance from the first part to the final part. After going through the experiment we came to an equation of inversecos(L/h-1).
This is the picture of the calculations in which we tried to find the relationship or equation in this situation where the angle changes. However, we wanted in different terms than the one in the image for example in terms of variables m,L,g and theta.
This is what we wanted in terms of the variables from the image above by applying to a problem and using a force diagram to show how the angle change plays a factor in the calculations. In the end of the calculations we came to an equation to relate to the angle change problem which came to be F= mgtan(theta).
After practicing and seeing the scenario with a hanging mass changing the angle we started the video analysis which had the same situation but in this case it was due to charges pushing the ball changing the distance. We were able to see the similarity between the gravitational force equation after the analysis causing it to see it as a new force but instead of gravity being the force we now had the force of electrostatic. With images shown below you are able to see the process of the experiment to see how we came to the conclusion of the charges interact with each other using Coulomb's Law and how similar it is to the gravitational law but with electricity.
While doing the analysis from the movie we calculated an equation to show the relationship between the force and distances charges of electricity are affected. As seen in the image the ball received an angle change and like the image before we used the knowledge prior with the equation to make one relating to the force and distance. This is the equation we plugged into LoggerPro to produce the Electrostatic Force vs. Separation Distance.
This is the graph of the experiment that shows the relationship between the electrostatic force and the distance which is inversely proportional to each other. The thing is we had to find our own using the power fit model and showing it was close to the increments of 10^-5 and close to -2. As a result from the fit we came to our vales of A: 5.0*10^-6 and B:-2.50 to plug into the Coulomb's Law equation.
This picture shows how we used the information of the graph to relate it to coulombs' Law using the force to find the charges of each the variable in the movie. It shows the conclusions we came up with the questions in the lab manual and how the gravitational force is the same because we considered a charge to be like a mass showing the exact equation but instead of gravity being the force it is the electricity that is being done. Our charges came out to be q=2.36*10^-8 Coulombs.
The last part of the lab was seeing how the different charges interacted with each other and how one attracts and the other repels. And being to apply the new equation of Coulomb's with charges in different situations and distance that separates them to see the electrostatic force.
No comments:
Post a Comment