My hypothesis was only partially correct. I concluded that the velocity-time graph did go in a straight line. ta afrouz experiment acceleration due to gravity purpose: the purpose of this experiment was to determine to measure the acceleration. A random error that occurred was that one group member released the object, not in synchronization with the ticker timer which may have hindered the process of dots being recorded on the tape. The anticipated error was that the numbers would have been rounded and not completely accurate.Īnother systematic error is that the ruler is not 100% accurate when measuring it may be off by. Wind two coils (150 turns each) around the cardboard tubes. One error might be in the calculations in Table 1. Experiment setup Wrap two pieces of cardboard around the plastic tube about 60 to 70 cm apart. ErrorsĪfter performing the experiment, several errors were noted. We know that velocity changes with t = time and displacement changes with v = velocity. Given the formula vf = vi +at and d = (vf +vi/2). Due to a change in velocity, there was a change in displacement. This was because as time increases, velocity changed at a constant rate. #FINDING ACCELERATION DUE TO GRAVITY LAB FREE#The change in velocity of an object in free fall was directly proportional to the displacement. The velocity position graph (refer to graph 2) was curved because changing velocity means change in slope.ĥ. The purpose of this experiment is to investigate the motion of objects falling under various conditions and to determine experimentally the acceleration due to. The slope of the velocity time graph was accelerating 6.74 m/s^2. The relationship between the change in velocity and elapsed time was that the velocity increases constantly as the time increases therefore they were proportionate.ģ. It was heading in a positive direction (refer to graph 1).Ģ. The velocity-time graph is in a straight line, meaning it was going at a constant acceleration. Therefore the acceleration throughout was 6.74 m/s^2 this may be caused by experimental errors and calculation errors.ġ. = 674 cm/s^2 (*note: To convert into meters, I divided (674 cm/s^2) by 100) Therefore at 0.2s, the average velocity was 92cm/s.Īcceleration was found by finding the slope of the velocity time graph. To find average velocity I did the following: One example calculation would be at 0.2 seconds, when displacement is 9.2cm. A sketch (program) running on the Arduino will capture information of times when the pickets. Position from the start (cm)Īverage velocity was found by dividing change in time by displacement. You will drop a picket fence between the light sensor and an LED. I measured and recorded the position from the start of the tape corresponding to each half time interval and then plotted a velocity-position graph using the velocities I recorded. I calculated the slope of the velocity-time graph, which gave me acceleration in cm/s^2.
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