Lab Report 5 - Newton’s Second Law

Lab Report 5 - Newton’s Second Law - Newton's Second Law...

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Newton’s Second Law Physics 101 Section 9
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Introduction: In this experiment, we were asked to perform a series of tasks aimed toward analyzing Newton’s Second Law. Using cart on a frictionless track, we examined the results of two separate experiments. In the first experiment, we were asked to determine the acceleration of the cart, whose mass was constant, when applying various forces to it. We did this by using the Pasco Smart Pulley, which enabled us to record the cart’s velocity as the value of the hanging mass varied. Using Data Studio, we were able to transfer the data obtained by the Smart Pulley and plot it onto a graph. We then easily determined the acceleration of the cart using a quick linear fit tool, which calculated the slope of the graph, hence, the acceleration. After obtaining at least three different accelerations for a given net force, we then found the average acceleration of these three trials and measured the margin of error for each, using standard deviation. Using 10 grams as our first hanging mass, we then proceeded to apply 10 more grams to the hanging mass before stopping at 60 grams. Using the average acceleration and hanging mass of each trial, we then plotted these values into an x-y coordinate system, giving us a graph. For the second part of this experiment we were asked to determine the acceleration of the cart once again, but this time varying the mass of the cart while the force remained constant. We did this by hanging a constant mass from the pulley and, using Data Studio and the Smart Pulley, recorded the velocity as we applied more and more weight to the cart. We recorded the velocity of the cart least three times for each mass, and once again determined the average acceleration of the cart and the margin of error using standard deviation. Using the average acceleration and total mass of the cart we then applied these values to an x-y coordinate system, thus creating our graph for the second part of the experiment. Using these graphs we then were able to draw several conclusions about Newton’s Second Law. Procedure: For the first part of our experiment we were asked to calculate the acceleration of the cart as we changed the value of the hanging mass, thus resulting in the creation of different forces on the cart. Using a fixed mass of 60 grams, we first used 10 grams, or 0.01 kilograms, as our hanging mass and placed the remaining 50 grams on the cart. Doing this reassures our experiment’s accuracy. After using Data Studio to record the velocity of at least three trials, we then found the slope of the graphs (acceleration) and determined the average acceleration and the margin of error. After doing so, we then changed the value of the hanging mass to 20 grams, or 0.02 kilograms, and once again
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Lab Report 5 - Newton’s Second Law - Newton's Second Law...

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