In the second half of the lab, we collected time data from a steel ball in free fall. We also found the uncertainty in g using propagation of error rule. Following that, the standard deviations of the mean for time and height were calculated. Because our objects are starting from rest, the term Vnaught was set to zero. Standard Deviation: The following kinematic equation was used to solve for the acceleration due to gravity. Mean: The standard deviation of the mean of the time and of the heights was also found in the experiment, giving ideas about the variability of our measurements. We also used this once all of the trials were complete to find the average calculated g. In order to find the mean, we added up all of the values and divided the value the number of values. We first converted all units to seconds and meters.
Measuring acceleration due to gravity lab for free#
To begin the calculation part of the trials we needed to find the mean, or average, of the time values and also of the heights from which the objects in our experiment were dropped for free fall. This experiment will use the following formulas: displacement, average, calculated acceleration, standard deviation of the mean, percent deviation, and percent error to test some of the issues noticed Aristotle, Galileo, and other scientists. Later, Galileo, the founder of modern science, discovered that if an object is in free fall, it will experience no air resistance and has a downward acceleration solely due to gravity, at a value of 9 discovery showed that weight does not play a factor in the rate at which an object free falls. Also, he thought that the speed of a falling object depended on the weight of the object divided the resistance of the medium it was traveling through, meaning heavier objects fell faster. In the experiment, we took free fall measurements and compared them to the generally accepted value for gravity, which is 9 Theory Aristotle thought that every motion required a mover or an object, and each object moved toward a goal. Preview text Acceleration due to gravity PHYS 215, T 3pm Purpose The purpose of this experiment was to calculate the value of acceleration due to gravity of a free falling object.
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