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1. Select Velocity on Y-axis and Time on X-axis. Attach about 20 to 30 grams to the weight hanger. Hold the cart near the left

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1. Select Velocity on Y-axis and Time on X-axis. Attach about 20 to 30 grams to the weight hanger. Hold the cart near the left end of the track. 2. Start recording data and then release the cart. 3. Stop data recording before the cart reaches the pulley. Stop the cart before it collides with the pulley. 4. Find the slope of the line. This is the measured acceleration of the Cart. 5. Repeat with 250 g and 500 g on the cart. (You may need to use more mass in the hanger to get a good acceleration). 6. Fill up the data in Case A of the Date Table. CASE B 7. Select Force on the Y-axis, and time on the X-axis. You will now see the force as a function of time for the same cases that you had run for Case A. 8. Note the data on force in Case B in the date Table. CASE C 9. Open Hardware Setup and de-select Position, and select Acceleration (and Force). 10. On the Y-axis select Force, and on the X-axis select Acceleration-X. 11. Add 20-30 g in the weight hanger, Start Record, and let the cart roll from the left end. 12. Stop Recording and stop the cart be fore it hits the pulley. 13. Determine the slope of the force Vs Acceleration line, and note it in Case C in the data table. The slope should be the same as the mass of the cart plus added masses. 14. Repeat with different masses on the Smart Cart. PROCEDURE FOR THIRD LAW 1. Remove the string and the Pulley. Attach the second End Stop on the right side of the Track. 2. Remove the magnetic bumper and attach the hook to the second Smart Cart. Turn it on, and put it on the track so that the hooks face each other. 3. Attach a spring from the Spring Kit with one end on each hook. 4. In Capstone, select both Smart Carts. In each cart select Force Sensor only. 5. In the graph, select Force on the Y axis and Time on the X-axis 6. Now hold one cart and pull the other away. Apply different amounts of force. 7. Select some positions on the time axis and note the force on both carts and enter in the Data Table for Third Law. B. Find the percent difference between the two forces

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