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Lab 19: PHYS 4A Lab--Conservation of Energy/Conservation of angular momentum

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lab 2 Free Fall Lab- determination of g and some statistics for analyzing data

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Purpose Determine the gravity coefficient by determine the velocity of a falling object with spark generator and spark–sensitive tape. Compare the result  with the actual value to calculate the error from systematic nature. Procedure The spark generator is connected to a cylinder which would fall with a distant of 1.5 m and was linked with the spark-sensitive tape. When the cylinder released, the spark generator left sparks on the tape with a frequency of 60 per second. After measuring the distant between sparks and analyzing those data, we can finally get the local gravity coefficient. Method of Fitting From the sparks we can derive the time of each spark. To ensure the velocity’s accuracy, we should choose a mid-interval time and the corresponding mid-interval velocity. When we plot velocities in excel and plot the fitted curve, the slope of the fitted curve is the gravity coefficient. Conclusion and Analysis The gravity coefficient determined by...
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22-May-2017: Lab 17: PHYSICCS 4A LAB--Finding the moment of inertia of a uniform triangle.

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Lab 17 Purpose: To determine the moment of inertia of a right triangular thin plate around its center of mass, for two perpendicular orientations of the triangle. Introduction: In this lab, we will examine the parallel axis theorem with a special case. We will determine the moment of inertia of a right triangular at its edge. Then we will use parallel axis theorem to determine the moment of inertia around its center of mass. Comparing the result with the result of calculating the triangular part by evaluating the whole system’s moment of inertia. By comparing these two results, we can derive the conclusion that these two concepts are equal to each other in this lab. Setup Set the equipment up like the figure below. Mount the triangle on a holder and disk. The upper disk floats on a cushion of air. Process: Using LoggerPro to collect data when the apparatus is in the angular acceleration. Use the equation from Lab 16 as told in the guidance to derive the mom...
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