in the Value 1 edit box. d. When the displayed voltage reading for Input 2 stabilizes, click Keep . e. Point the Accelerometer arrow straight up. f. Type 9.8 in the Value 2 edit box. g. When the displayed voltage reading for Input 2 stabilizes, click Keep , then click . 5. Attach the Force Sensor to a dynamics cart so you can apply a horizontal force to the hook, directed along the sensitive axis of your particular Force Sensor. Next, attach the Accelerometer so the arrow is horizontal and parallel to the direction that the cart will roll. Orient the arrow so that if you pull on the Force Sensor the cart will move in the direction of the arrow. Find the mass of the cart with the Force Sensor and Accelerometer attached. Record the mass in the data table. 9 - 2 Physics with Vernier
Newton’s Second Law 6. Place the cart on a level surface. Make sure the cart is not moving and click , then click . Trial I 7. You are now ready to collect force and acceleration data. Grasp the Force Sensor hook. Click and take several seconds to move the cart back and forth on the table. Vary the motion so that both small and large forces are applied. Make sure that your hand is only touching the hook on the Force Sensor and not the Force Sensor or cart body. 8. Note the shape of the force vs.time and acceleration vs.time graphs. Click the Examine button,, and move the mouse across the force vs.time graph. When the force is maximum, is the acceleration maximum or minimum? To turn off Examine mode, click on the Examine button, . 9. The graph of force vs. acceleration should appear to be a straight line. To fit a straight line to the data, click the graph, then click the Regression Line button, . Record the equation for the regression line in the data table.
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