Electric Charges

We assumed that the balloon would stick to the glass after being rubbed on hair and then later after being rubbed with silk. Both assumptions were correct. We tried explaining charges to children but it was a bit more difficult than we expected.

The picture above is of an experiment we did in class with tape to show that there are multiple charges. When a piece of tape was stuck to the table then removed and placed near skin there was an attraction. When two pieces of tape were each stuck to the table, then another piece was stuck to the top of each. The tops would repel tops and the bottoms would repel bottoms but when top and bottom were placed near each other they would attract. This was consistent with what the hypothesis stated, that there were two kinds of attractions and more than one charge.

In the above picture, Mario shows us his expertise in free body diagrams and the equations of forces in the x and y directions. With this we were able to derive a formula for the force.

The relation between the electric force and the distance between the objects is inversely proportional.

We use Coulomb's law to find the electric force between two objects.

This is the graph from the experiment in which we mapped out a video of one metal ball on a stick pushing another ball hanging from a string through the use of charge. The graph on the right is the position graph of both balls and the graph on the left is of electrical force vs. separation distance. 

The above picture shows my free body diagram and my Newton equations and the angle and the Electric force. This number may not be accurate because I went with an assumed value at the end of the position graph rather than an actual value.

The two pictures above show the questions from the conclusion section from the logger pro experiment we conducted above. experiment.

The above picture shows and object that transfers electric energy from the base to the silver top through the use of belts that act as insulators. The paper on the silver top is being repelled as a result.

Professor Mason performed different experiments with the device, first with a pie tin which, at first, prevented the paper from lifting, right before it was ejected into the air. Then he turned on the device again with this fan on it, and the fan spun and also prevented the paper from being repelled.

Our assumptions were that the pie tin would fly off and that the propeller would spin clockwise, both of which were true..

The ratio between the force of electricity and the force of gravity.