L10 - L10: Investigations in Electrostatics Goal: To...

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L10: Investigations in Electrostatics Goal: To investigate how objects acquire electric charge and what principles govern the interactions between charged objects. Prelab: 1. Observation: A person does not show up to class. Inference: I infer that the person is sick. 2. L04-Acceleration in a long fall a) Objects fall to the ground when we release them, thus we formulate the principle that all objects are attracted to the Earth. We infer that gravitational force is pulling it towards the Earth. b) We deduct that the ball with the greater weight will hit the ground first because it would have a greater force due to gravity. Investigation A 1. The Styrofoam cups repel each other when you bring them close to one another. Nothing happens when they are far apart from each other. When you try to get them to touch, they seem to move away from each other. 2. When the strips are far apart they hang straight down with no movement. When you bring them closer together the bottom ends move away from one another and repel each other. The closer you bring them together, the farther they move away from each other. 3. Principle A: Similar objects rubbed in the same manner repel. Principle B: After making physical contact with another object (rubbing fur and ripping tape off table), the two similar objects exhibited repulsion from one another.
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This note was uploaded on 09/07/2011 for the course PHYSICS 101 taught by Professor Graham during the Spring '11 term at UNC.

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L10 - L10: Investigations in Electrostatics Goal: To...

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