Strange behaviour of a pithball when charged with a rubbed rod

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Strange behaviour of a pithball when charged with a rubbed rod: Testing Experiment

Aim

To apply knowledge of electrostatics to a particular situation.

Prior Knowledge

Electrostatics
Electric forces
Conductors
Insulators

Description of the Experiment

Watch the first video, record your observation with a picture and words. Explain the behaviour of the pithball. Predict what will happen if you touch the ball with your hand and then repeat the experiment. Explain your prediction. Then watch the second movie. Record the result and decide if you need to revise your explanation. Devise a new explanation if necessary.

	Frame rate: 15fps Size: 480 X 360 File Size: 0.60Mb
Please wait or read the page while the movie loads up. (This may take a while.) You will need QuickTime to view the movies. If you want to download the movie to your computer, right-click or control-click HERE.

	Frame rate: 15fps Size: 480 X 360 File Size: 0.30Mb
Please wait or read the page while the movie loads up. (This may take a while.) You will need QuickTime to view the movies. If you want to download the movie to your computer, right-click or control-click HERE.