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# lab 4 - Bryan Spelhaug Tues Lab 8:00am Experiment IV Linear...

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Bryan Spelhaug Tues Lab 8:00am Experiment IV: Linear acceleration Date: 9/28/10 Objective: To verify Newton’s Second Law by investigation of acceleration as a function of time. The linear acceleration of an object is the rate of change of linear velocity with time. If acceleration is uniform, the speed must be increasing by equal amounts in equal time intervals. In this experiment, we will graph the velocity of an object as a function of time to see if the acceleration is linear. Method: The hanging mass is attached to a glider, which is on a frictionless track. Once the glider is let go, the hanging mass is forced down toward to ground due to earth’s gravitational pull. The glider and hanger are both attached together via string and a pulley. A photogate is placed on the pulley, which records the acceleration. After graphing the velocity as a function of time, we take the best-fit line and find the slope, which will reveal the linear acceleration. If the experiment works, the graph should show a positive incline along the (X,Y) plane.

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