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Physics 4AL 4

# Physics 4AL 4 - Physics 4AL Lab for Science and Engineering...

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Physics 4AL Lab for Science and Engineering Mechanics Experiment: Lab Section: Name: UID: Date: TA: Partner: Lab Station:

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Introduction/Purpose/Theory/Equations: The theory behind this experiment is simple. By sliding a glider down the track to hit a force transducer and then return back, we can measure the change in momentum in each direction, and thus figure out the force that it exerted on the FT. From this, we can calculate the Impulse of the collision. The purpose is to show that by calculating the change in momentum, the Impulse can be found. These were the equations needed to obtain the necessary information… Velocity = Length / Time Momentum = Mass X Velocity Change in Momentum = Momentum 1 + Momentum 2 Voltage for Integration = Calculated Voltage – Baseline Voltage Impulse = Integral of Force with respect to time Procedure: This experiment included two parts. The first part was to calibrate the Force Transducer. For this, we hung a series of five weights from the FT, and measured the voltage that the FT sent to the computer. Using this, we compared the voltage to the force of the hanging mass to make a good conversion factor between the two. Next, we had to measure the impulse. We set up an air track with a FT at the end, and a photogate towards the FT. In the experiment, we will send a glider down the air track with a little flag on top of it. When the front of the flag hits breaks the photogate, the FT starts recording for exactly one second, and the photogate begins recording the time interval until the flag passes the gate. The glider then hits the FT, changes direction, and goes back through the photogate. As the flag passes through the photogate for the second time, the second time interval is recorded. From this, we get the time interval towards the FT, the time interval away from the FT, and the voltage from the FT. From these values, we can obtain velocities, momentums, forces, and impulses.
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Physics 4AL 4 - Physics 4AL Lab for Science and Engineering...

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