Day SevenL

Interactions of Scotch Tape Strips

We used Scotch tape. Each side of the tape has a different charge.

 
Top strips vs. Top strips: Repel

Top strips vs. Bottom strips: Attract

Bottom strips vs. Bottom strips: Repel

Conclusion: This experiment proved there are different charges. The top side of the tape has one type of charge and the bottom has another opposite type of charge. Two different charges are attracted to each other, while two like charges repel each other.

Electric Force Law Video Analysis 

Calculation: Rearrange F in term of mass of the object, the distance it moves from x-axis, and the length of the rope.

The Slope: The slope means that the electric forces are inversely proportional to distance between two objects.