Friction Lab Physics

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Friction Lab Ashley 6/25/2014 Conceptual Physics Procedure: Part 1 1. A can of Red Bull was used to add weight to the friction blocks. The plain wood block and the can of Red Bull were weighed. The combined weight in grams, kilograms and Newton’s were recorded. 2. The ramp board was then laid on a horizontal floor and secured so that it would not move. 3. The wooden block with the sandpaper side down was placed on the ramp board with its largest surface in contact with the surface of the board. A 500-g spring scale was attached to the wooden blocks hook. 4. While using the spring scale, the wooden block with its weight was pulled lengthwise along the flat horizontal board. While the block was moving at a constant speed, the force in Newton’s was recorded multiple times. 5. While the block was at rest, the spring scale was monitored just as the block began to move. The force applied on the spring scale was recorded in Newton’s multiple times. Part 2 1. The wood block was turned on its side. 2. The entire process from Part 1 was repeated three times and the force of kinetic and static friction for each trial was recorded. Part 3 1. The experiment then called for the force of kinetic and static friction for the glass surface and sandpapered surface blocks. 2. Repeat Parts 1 – 3 while using two flat surfaces around the house. Glass on carpet and sandpaper on carpet were performed. The findings were recorded. Part 4 1. The plain wood block was placed with the largest surface in contact with the board while the board was lying flat. 2. The end of the board was slowly raised until the block just broke away and started to slide down. I was careful to move the board slowly and smoothly so as to get a precise value of the angle of repose, θmax. I used an alternative way to measure for θmax by measuring the base and height of the triangle formed by the board, the support,

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