Phys1_02-Forces_cbfb1a82-3083-4469-bfd0-1be41f497c60

Slide 2 Let's try it out!

Slide 4 Accelerometer (200 Hz) Remote 1 Ax Ay Az Time (s) 4 5 6 7 8 9 10 11 12 13 14 a (m/s²) -20 -15 -10 -5 0 5 10 15 ∆t: 3.01226 s μ: -0.081 m/s² — σ: 0.024 m/s² a: -0.243 m/s s: -0.00 m/s³ (r²: 0.00) μ: -9.806 m/s² — σ: 0.045 m/s² a: -29.540 m/s s: -0.00 m/s³ (r²: 0.00) μ: 0.055 m/s² — σ: 0.023 m/s² a: 0.165 m/s s: 0.00 m/s³ (r²: 0.00)   Force (200 Hz) Remote 1 Time (s) 4 5 6 7 8 9 10 11 12 13 14 Fᵧ (N) -5 -4 -3 -2 -1 0 1 2 3 ∆t: 3.01474 s μ: -0.447 N — σ: 0.0058 N a: -1.348 Ns s: 0.00 N/s (r²: 0.05)  Rezero sensor  Finding the "Known" Value of the Mass Watch the video below to find out how to find the mass of the device. Please note that the iOLab mass will be needed in many future labs and you should remember the procedure you've done here in order to repeat it for those labs. 01 Finding the Mass of the Device

Please note that we have ignored friction. However, looking at your acceleration vs. time plot, you should be able to compare the magnitude of the positive acceleration peaks to the short time of negative acceleration that follows them. Comment on the comparison of these values. Be certain that your lab report contains a plot of the data zoomed to show all five peaks, as well as a plot showing the data zoomed to show a single peak. Show a neat table of your data (UNITS) as well as the plot of Force vs. Acceleration and the slope of the trendline that fits the data. If you wish, you can force the trendline to run through the origin. Refer to the data in the prior section and conclude whether your data supports or refutes F=ma.

Slide 7 Error Analysis The error in the mass When you found the mass in slide 4 of this manual, you used the mean of the force of gravity and the acceleration due to gravity. However, these values also include uncertainties, and To find the mass you used, Rearranged, this is Therefore, to find the uncertainty in m , you will need to use the multiplication/division rule from the error and uncertainty guide. Parts I and II After finding the value of the mass, both in Parts I and II, you can see if the values fit within the uncertainty of the value you found in the steps outlined above. You can also find the percent difference between the value from Part I and the known value, as well as the value from Part II and the known value.