Acceleration Due to Gravity Report PHYS 141 (1)

5 0.788 0.776 0.78 0.78 0.772 0.7792 0.01 9.5 1.673 1.698 1.738 1.73 1.706 1.709 0.03 19.5 3.023 3.036 3.036 3.09 3.04 3.045 0.03 Table 1: Shows the acceleration for each trial, the average, and its standard deviation. angle Average Acceleration Measured Gravity (m/s^2) Avg measured Gravity Standard Deviation 5 0.7792 8.94 9.6 0.91 9.5 1.709 10.6 19.5 3.045 9.122 Table 2: Average acceleration taken from each angle measured, the measured gravity ( experimental) , its average and standard deviation. From the results that were obtained, a value close to that of gravity (9.8 m/s^2) was not possible to get. The preparation of the lab was to see the error in our procedure, and other factors could have contributed to getting such a low value on gravity. For example, the cart may have been lopsided on the track, or the wheels were too stiff to actually roll and possibly got stuck. However, the values were consistent enough to show that the experiment was consistent and each measurement was no different than the others. Although the measured gravity from each trial has a different value, finding the average gravity to find the percent error by using the following equation : ( g experimental − g ) g ∗ 100 9.6 − 9.8 9.8 ∗ 100 = 2% error