mousetrapcar

mousetrapcar - Purpose: Purpose: The purpose of this...

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Purpose: Purpose: Purpose: Purpose: The purpose of this project was to build a fast car made from wood or foam board that uses a mouse trap for an engine and power. And our car (a speed car) needed to go 4 meters in under 3 seconds for an A, 3 meters in under 3 seconds for a B, and so on. When we were timed for a grade, our car, named George, went 4 meters in 2.04 seconds, so we got an A. How a Mousetrap Car Works: How a Mousetrap Car Works: How a Mousetrap Car Works: How a Mousetrap Car Works: The car works by string wrapped around the axle being pulled by the mouse trap springing, causing the axle to spin and the car to move. For the car to go really well, you need to have little or no friction between the axle and the hole it goes through, so that the wheels spin freely, and then the car will go really far and fast. Another thing that will help to make your car perform better is if you have plastic or metal axles so you can grease them, which significantly improves your car’s performance. Procedure: Procedure: Procedure: Procedure: • Initial design • Initial design • Initial design • Initial design Our first idea was to build our mouse trap car’s body out of wood to make it sturdy, but when we got it done it was too heavy. We made the wheels out of wood using a hole saw to make sure they were round and even, but the wheels didn’t have enough traction so the car spun out. We made the axles out of a dowel rod. And we had string to attach to the mouse trap and the axle but when we just wrapped it around the axle, it slipped on the axle when the mouse trap sprung. It slipped on the axle because there was not enough friction between the string and the axle.
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This caused the car to only go a few inches. When we used a longer string to get more friction, it quit unwrapping when the mouse trap was done springing, and then it made the axle quit spinning and stopped the car. So that didn’t work either. Also there was too much friction between the wooden axle and the wooden holes in the body. So we had to revise the design. • Design Rev. A • Design Rev. A We changed the body from wood to foam board, because foam board is lighter than wood, and because then the car doesn’t have to pull as much weight, so it will go farther and faster. We added tires because the car was spinning out, so we would get more traction. We added the lever arm extension because then you
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This note was uploaded on 03/23/2010 for the course PHS 1022 taught by Professor Mills during the Three '08 term at Monash.

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mousetrapcar - Purpose: Purpose: The purpose of this...

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