Forces And Acceleration

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Jan 9, 2024

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Sakhi Thakkar September 24, 2023 PHY 133 TA: Fabiola Caeteleyva Force and Acceleration
Introduction: In this lab, we are going to study the relationship between force and acceleration. We will be using Newton’s Laws, mainly Newton’s Second Law, to find the mass of the IonLab device. Focusing on Newton’s Second Law, it states that acceleration will only occur when an applied force is acted on such object. Disregarding friction, when no force is applied to the object, acceleration will discontinue. However, it will continue to move at a constant velocity according to Newton’s First Law. Referring back to our intention, we would use the slope found from the Force vs Acceleration plots to find the mass of the device. Since the mass is unknown, this slope can be compared to the actual value. Methods/Procedures Equation(s) used -Fnet=ma -Fg=mg Preliminary Procedure Part I 1. Screw the plate attachment onto the force sensor 2. Place the device down on a flat surface with a vertical orientation and wheels up 3. Press record and only move in the y direction 4. After a few small pushes, stop, then hit the stop button With performing several tests with the IOLab, we can test these relations of force and acceleration. From here, tables and graphs were created using the raw data that was obtained from the IOLab device. The results we will be expecting out of the Force and Acceleration lab is that when the force increases on an object, acceleration increases as well. -Formula for uncertainty -Formula for percentage difference
Preliminary Procedure Part II 1. Replace the plate, then fasten the screw 2. Position the device on its head with the y direction pointing down 3. Press record. Let the device sit on the table for one second then steadily lift the device by the screw 4. Place it back down and stop recording 1. After, find the average force and acceleration. This will give you the force and the acceleration due to gravity 2. Use gravitational force equation to find the mass Part I Procedure 1. Attach the plate to the force probe 2. With the y direction pointing upwards, give the device five pushes forward, each time increasing in strength. 3. Record values in a chart 4. Use Excel to plot the Acceleration vs. Force 5. Add linear trend line 6. Find the mass with the equation for a line and the slope of the plot 7. Compare it known value of the mass Part II Procedure 1. Attach the screw to the force probe. The long spring should be connected to the devices’ screw and the other end to a textbook by a binder clip that’s leaning against the edge of the desk. Device should be hanging in the air 2. Pull the device slightly and record for 20 seconds, focusing on the y-axis more 3. Make a parametric plot and find slope (mass) 4. Compare the mass to the two masses found in Part I and II
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Results As demonstrated in graph one, when a force is applied on a object, there is acceleration directly correlated with it. When the force peaks, so does acceleration. Hence, force and acceleration are connected with other. Data to find average force Date to find average acceleration A . 1B 2B B 1A
C 1C All 5 peaks 2C Zoomed on one peak Force (N) Acceleration (m/s^2) 5.026 7.282 9.333 12 17.949 0.622 0.902 0.967 1.183 1.529 Table including peak Force (N) and Acceleration (m/s^2) values of each peak 3C I
D A linear tread- line graph made from the table 3C 1D Parametric plot of acceleration vs. force 2D 4C Coordinates to find slope (mass)
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Calculations - Using gravitational force equation to find mass Fg = mg (from BD - 1 . 000N = m( -9 . 533/)) # -> the known value of mass " m = 0 104 Linear trea lie plot (from 4) ° d n # Slope (mass] from graph : 0 . 095 I The mass from the linear tread-line plot iS 0 093kg . Comparing it to the known value of mass , which is 0 . 104kg , the difference is 0 . 009 - Using the parametric plot to find the - mass (using coordinates from 2D( -Y = m = + 1 -0 . 73T9N- x2-XI 10 . 9658m/s2-7 . 0254m/s = - 69N I - 0 . 0azig 3 . 9404MIS2 The mass from the parametric plot is 0 . 098kg · Comparing it to the known value of mass which is 0 . 104kg , the difference is 0 . 006 . Furthermore , comparing it to the linear tread-line plot , which is 0 . 095 , is 0 . 003 .
- Error Analysis Uncertainty in n · ( * ) = /- I ) (s o() = 0 1573103954- g Percentage Difference for Mass (accepted value - measured values x Lacepted value) "100 10 . 0959-0 . 104g)x - x100 0 . 0959 - 99 x100 - 9 . 4. , 955 the percentage diff . for part I 20 . 098g-o . longly g x100 x 100 -6 . 12 % is the percentage diff for part 2
Discussion/Conclusion Throughout this experiment, force and acceleration of the IOLab device was tested. As the force applied on the object, acceleration is directly correlated with it. In all the experiments performed, it proved over and over again that each time force increases, decreases, speeds up, or slows down, acceleration will continue as same. Overall, the hypnosis that was claimed at the beginning was supported and that force and acceleration increase at the same time. The expected positive relation between force and acceleration was shown. This was proven by the masses found in each Part 1 and Part 2, and how closely related they were to one another and the known value of mass. The known mass was 0.104g and was found through an experiment of steadily picking up the device, holding it for a coupe of seconds in the air, and then slowly placing it down. Finding the average acceleration and the average force lead me to find the known mass of the device. One trial to confirm this was plotting a linear tread-line plot. The information was gathered by plotting the force and acceleration peak values of the five peaks which in the end came out to 0.095g. Similarly, a second trial was occurred where we found the mass through a parametric plot. The mass of this plot was taken by picking two random points on the plot and calculating the slope, which translates to the mass and came out to be 0.098g. These two values were then compared to the known mass and they all were similar to one another. Errors for mass came out to 0.145g and all the mass values fell within the error range. Furthermore, there were no observed outliners. Possible sources of error were mainly human errors such as pushing/ pulling the device too hard/fast. Some other errors could be technical errors such as forgetting to revert the sensor. Ultimately, the Force and Acceleration Lab was performed successfully and the hypothesis was supported
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