Copy of Force and Acceleration Lab
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School
Stony Brook University *
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Course
131
Subject
Aerospace Engineering
Date
Jan 9, 2024
Type
Pages
5
Uploaded by BrigadierStrawPuppy376
Force and
Acceleration
Lab Report
Introduction:
In this lab, we will do different experiments to find the mass of the iolab device with force and
acceleration. The relationship between mass, force, and acceleration is F=ma. Newton’s second
law, where it states that acceleration depends directly on the force that is exerted on an object,
otherwise the object will remain at equilibrium until a force is applied.
Procedure:
Experiment 1:
1.
Open the iolab website and connect the dongle into the USB port
2.
Power on the iolab device
3.
Screw on the eye bolt onto the force sensor
4.
Place the iolab device in the orientation such that the Y is pointing towards the surface of
the table
5.
Press record and allow the iolab device to st on the surface of the table for 10 seconds
6.
After 10 seconds, lift the device and maintain the height for 5-10 seconds before placing
the device back onto the table
7.
Stop recording
8.
Press the graph element option and highlight the section of the accelerometer graph
where the device is at rest to find the value of acceleration
9.
Then, highlight a section of the force graph where the force is not 0
10. Calculate the mass of the iolab device using the equation F
g
=mg
Experiment 2:
1.
Open the iolab website and make sure the device is turned on and dongles are in the USB
port
2.
Attach eye bolt into the force sensor
3.
Turn the device in the orientation so that the wheels are faced up
4.
Press record
5.
Give the device 5 consecutive pushes of increasing strength using the tip of the thumb
6.
Click the graph option and hover over the peak (blue graph) in the force graph to find
force and acceleration at that point
7.
Repeat step 6 with the other peaks
8.
Input values of acceleration and force in excel
9.
Select scatterplot
10. Organize the graph so Acceleration is the X variable and Force is Y variable.
11. Select linear line equation
Experiment 3:
1.
Open the iolab website and make sure the device is turned on and the dongles are plugged
into the USB port
2.
Attach eye bolt into the force sensor and hook the spring included in the lab kit on the eye
bolt
3.
Attach the other end of the spring with a binder clip And place it on the edge of a table or
chair
4.
Give the device a small pull so that it oscillates
5.
Once it starts oscillating, press record for about 10 seconds
6.
Stop recording
7.
Switch from chart mode to parametric plot mode
8.
Use graph element and highlight the the oscillation graph below the Force vs
Accelerometer graph
Results:
Figure 2: Force and Accelerometer graph during 5 consecutive pushes of increasing strength (blue graph in accelerometer
indicates acceleration). As force increases, the acceleration also increases. Graph for experiment 2
Figure 3: A zoomed in data of one peak, F
y
=2.302N nd A
y
= 11.567 m/s
2
Figure 4: Left: table of values for acceleration and force based on the peaks in figure 2.
Right: A scatterplot and linear equation based on the table
Figure 5: Oscillation graphs. Top: Acceleration; Bottom: Force. Graph of experiment 3
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Figure 6: Oscillation graph of Acceleration vs Force
Figure 7: Left: One point on the graph; Right: Second point on the graph. Two points are used to find the slope of the graph.
Graph for experiment 3
(Acceleration m/s^2, Force N)
Coordinate 1 (left graph)
(-14.1354, -2.7073)
Coordinate 2 (right graph)
(-5.8632, -1.3219)
Calculations:
Calculation for device:
Fg=mg
-1.948N=m(-9.811m/s
2
)
0.198kg= m
Slope of the two points:
Y
2
-Y
1
/X
2
-X
1
= m
-1.3219-(-2.7073)/-5.8632-(-14.1354)
0.167= m
Slope of scatter plot graph
0.163= m
Point [11.567m/s
2
(acceleration), 2.302N(force)]
F=ma
F=0.163(11.567m/s
2
)
F=1.885N
|[(1.885-2.302)/2.302]*100|=18.11% error
=0.521% Uncertainty
σ(?/?) = 0. 00521
Percent error
% error= [(Measured-Observed)/Observed]*100