Conservation of Momentum

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Stephen F Austin State University *

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1301

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Physics

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Dec 6, 2023

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pdf

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7

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Cody Cox Conservation of Momentum PHYS – 1101 – 022 October 23 rd , 2023 Melvin Parrish
Purpose: The purpose of this experiment is to examine momentum and energy in collisions. Equipment: • Dynamics Cart Track • Two PASCO Wireless Smart Carts • Two Bar Masses Procedure: To begin this experiment, we first went and got the two PASCO carts needed for the experiment. We then set up the PASCO capstone and connected both carts. The graph on PASCO needs to have velocity in meters per second on the y-axis and time in seconds on the x- axis. Next, we started with inelastic collisions with equal mass and made sure the Velcro on the carts were facing each other for each of the five methods. For method A, we placed one cart in the middle of the track and the other cart at the end. To collect the data, we push the cart on the end towards the cart in the middle of the track. We recorded the velocity for both carts before the collision and then recorded the velocity after the collision. The velocity after the collision should be the same since the Velcro made the carts stick together. We ran this method a total of three times and collected data each time. For method B we started both carts on the same end of the track and gave the front cart a slow push and then gave the second cart a faster push, so it
could catch the first cart about the middle of the track. Once again, we recorded the velocities before and after the collision for three trials. For method C, we added five hundred grams to one of the carts and placed it at the end of the track, with the other cart in the middle of the track. We gave the cart with added mass a push towards the middle and recorded the velocity before and after the collision for three trials. Method D also has a cart with the added mass. We placed both carts at one end of the track with the cart with no added mass in front of the other. We gave the cart with no mass a slow push and the cart with mass a fast push and ran three trials, collecting the velocity before and after the collision for each trial. To collect data for method E, we placed the carts on opposite sides of the track with no added mass. We gave each cart an equal push so they would crash into each other around the middle of the track. Once again, we recorded the velocity of each cart before and after the collision for three trials. Next, we began the experiment for elastic solutions, which means instead of the Velcro of the carts facing each other, the bumpers face each other. Methods A and B are run the same way as before with no added mass. Run each method three times and collect the data for both carts velocities before and after the collision. For methods C, D, and E we add five hundred grams to one of the carts. We ran each method three times and recorded the velocity before and after the collision. Method C needs to have the cart with added mass placed in the center of the track and the cart with no mass at one of the ends, making sure the bumpers are facing each other. Push the cart with no mass towards the cart with mass. Method D needs the carts to stop at opposite ends of the track and pushed at
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