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# lab 5 - Bryan Spelhaug Tues Lab 8:00am Experiment V...

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Bryan Spelhaug Tues Lab 8:00am Experiment V: Coefficient of Object Weight Date: 10/5/10 Objective: To verify the coefficient of friction of a piece of felt that is attached to a block of wood. The coefficient is the ratio of the force of friction between two surfaces and the force pressing them together. Friction is a force that apposes motion. When the coefficient is a large number it is harder to move an object; where as the opposite, having a small coefficient is easier to move an object. We will be experimenting if friction is impacted by surface area and/or mass. Method: For this experiment we will be utilizing a flat, smooth, aluminum track that is placed on a lab table. We them place a wood block with the felt side down on the track. The block is attached with string on both sides and the string is aloud to wrap around two massless, frictionless pulleys. The string was then attached to hangers equal in weight of 5g. Next, we added 50g to one side and then released the block to calculate the

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lab 5 - Bryan Spelhaug Tues Lab 8:00am Experiment V...

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