Physics I Lab Manual 2011 70 - plot 2 Select...

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EXPERIMENT 9. CONSERVATION OF LINEAR MOMENTUM 7. Add a calculated column for the magnitude of total momentum p tot = q p 2 x + p 2 y where you use the appropriate columns for p x and p y . 8. Add a calculated column for the angle of total momentum θ tot = tan - 1 p y p x where you use the appropriate columns for p x and p y . 9. Add a calculated column for the total kinetic energy KE tot = 1 2 m 1 ( v 2 1 x + v 2 1 y ) + 1 2 m 2 ( v 2 2 x + v 2 2 y ) where you use the appropriate columns for v 1 x , v 2 x , v 1 y and v 2 y . Statistical Analysis You will use the columns for the kinetic energy, magnitude and angle of the total momentum to determine the average and standard deviation of these values before and after the point of the collision. 1. Double click on the “y-axis” of your graph and in the “Axes Options” tab select kinetic energy, magnitude and angle of the total momentum as the (only) three columns to
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Unformatted text preview: plot. 2. Select “Statistics” from the “Analyze” menu. Select your columns for total magnitude of momentum and angle of momentum vector for analysis. 3. Adjust the brackets so that only the data before the collision point (i.e. t r < 0) is within the brackets. Record the mean values as your measurement and the standard deviations as your uncertainties in the initial magnitude and angle of the total momentum and the kinetic energy. 4. Adjust the brackets to enclose only the data after the collision (i.e. t r > 0) and record the mean values as your measurement and the standard deviations as your uncertainties. 60...
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