Static Electricity can move objects by attraction or repulsion
What You Need:
- 2 Balloons
- Wool Cloth
What To Do:
- Inflate both balloons and tie their ends off with string
- Hang the balloons so they are about 1" apart
- Note their movement - should be none since they are both neutral.
- Rub 1 balloon with a wool cloth. Let the balloons come close to each other. They should try to come together since 1 is charged and one is not.
- Let them touch - they should then become neutral since the charge is equalized.
- Now rub both balloons with a wool cloth.
- Allow the balloons to come close to each other. They should repel (move away) from each other since they both have a charge.
- Let them touch. When they touch the charge again is equalized and they will be neutral neither attracting nor repelling.
What Did We Learn
- When two object have the same charge they repel,
- When two objects have opposite charges they attract, and
- When a charged object is brought near an uncharged object, a charge
separation is induced on the neutral object and the two attract each
The first 2 statements are the qualitative part of Coulomb's law.