atwood 1 - III Conclusion Through the use of Atwoods...

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III. Conclusion Through the use of Atwood’s machine, we were able to test Newton’s second law. By measuring the acceleration of the masses tested with Atwood’s machine, we were able to calculate a value for the acceleration of gravity. While our data is not entirely linear, the line of best fit displays relatively accurate values for the force of gravity to which our machine was subjected to. We measured the acceleration of gravity to be 10.34 + 3.075 m/s2. The accepted value for the acceleration of gravity is 9.81 m/s2, which is within one standard deviation of our measured value. The data also allows us to calculate the frictional force acting on the system which is due to the rotation of the pulley around the axle; the value of this friction is 0.0186 N. Evaluation: The errors bars which stretch across the second graph indicate that we must have carried out some personal, as well as systematic, errors during the experiment. We may have made some arithmetic mistakes when determining the acceleration values and the uncertainties. For this
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