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physics lab2

# physics lab2 - 1 2 3 4 5 6 7 8 Lab 2 Motion 2 9 Staci...

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Lab 2: Motion 2 9

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Staci Williams Marc Dones Section 011 Performed September 24, 2009 Due October 3, 2009 10
Objective: The objective of this lab is to better understand the relationship between position, velocity, acceleration, and time while using one- dimensional motion. Description : The apparatus used in the lab was an air track, which is a triangular shaped track with numerous air holes through out the length. Air is blown through the holes allowing the glider to slide along the air track with little friction. A note card is attached to the front of the glider in order for the motion sensor to be able to detect its motion using the roundtrip time of the waves reflecting off of the card. Theory : Velocity is the first derivative of position with respect to time and the acceleration can either be seen as the first derivative of velocity with reference to time or the second derivative of position with respect to time. When acceleration is constant and acceleration is integrated twice we get: X = xo +vot + 1/2 at^2 and v = vo + at With these equations a position vs. time parabola and a velocity vs. time straight line can be graphed. Procedure: 3.1 Position, Velocity, Constant Acceleration 11

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First we leveled the air track by turning on the air and then placing the glider on the track. We measured the distance of the track to be 1.30 meters, and then we set the far end of the track on top of the thin block and calculated the angle to be 0.441 degrees. Next we massed both gliders with the gold colored glider having a mass of 276.4 grams and the red glider having a mass of 298.1 grams. Next we set up the SWS software and motion sensor as indicated. Next we turned on the blower and then placed the gold glider, mass of 276.4 grams, 0.4 meters away from sensor, releasing the glider and pushing REC at the same time, clicking stop right before the glider hits the end of the track. We made a few runs, and then selected our best to run statistics. We auto scaled the graphs and chose power fit for the position graph, liner fit for the velocity graph, and mean for the acceleration. 3.2 Mass and Angle Dependence
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physics lab2 - 1 2 3 4 5 6 7 8 Lab 2 Motion 2 9 Staci...

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