Physics Lab report
Fahedly
Lab3_updated9_17_18.doc
Physics 201 Fundamentals of Physics I Lab
FALL 2016
Name:
W # :
Section: Time: Date:
Lab partner:
Lab 3
I
Vector Addition
Purpose:
Procedure:
Data
|
Force #
|
m (g) |
Magnitude of the force F (N) |
Direction in o |
|
1 |
70 |
0.686 |
0 |
|
2 |
50 |
0.49 |
140 |
|
3 |
65 |
0.637 |
70 |
|
Resultant Force FR |
185 |
1.813 |
240 |
Analysis and discussion:
Finding the Resultant force FR =F1 + F2 + F3
i) Experimental
ii) Analytical or algebraic (analyze to components)
iii) Graphical
Conclusion
II
Projectile Motion
Parabolic Flight Path
Purpose:
Introduction:
Procedure:
Data
Calibrating the launcher (3rd notch)
|
t1 (s) |
t2 (s) |
t3 (s) |
tavg (s) |
v0 = 1.5 / tavg (cm/s) |
|
0.0025 |
0.0016 |
0.0016 |
|
|
θ0 = 30
y0 = (m)
|
x (m) |
y1 (cm) |
y2 (cm) |
y3 (cm) |
yavg (m) |
|
1.0 |
60 |
70 |
76 |
|
|
2.0 |
118 |
119 |
126 |
|
|
3.0 |
131 |
139 |
144 |
|
|
4.0 |
143 |
140 |
148 |
|
|
5.0 |
98 |
94 |
95 |
|
|
6.0 |
60 |
70 |
74 |
|
|
7 |
3 |
1 |
15 |
|
· Use Excel (or any other package of your choice) to plot x vs. y and fit the data points to a polynomial of order 2. Compare the coefficients obtained from fitting equation to their real values predicted by the path equation:
2
00
22
0
0
(tan) ()
2 cos
g
yyxx
v
q
q
-
=++
· Test your understanding of the projectile motion equations:
Predicting the flight time parameters, path equation, etc, can you hit the monkey on the pendulum in the lab from a distance of around 3 meters? Set the pendulum in motion with reasonable amplitude.
· Measure the maximum height and compare to theory
2
00
max
sin)
(
2
v
Hy
g
q
==
Data analysis:
Conclusion
III
Projectile Motion
Range Equation
Purpose:
Introduction:
Procedure:
Data
Calibrating the launcher; chose a suitable notch for this experiment
Notch number:
|
t1 (s) |
t2 (s) |
t3 (s) |
tavg (s) |
v0 = 1.5 / tavg (cm/s) |
|
0.0039 |
0.0043 |
0.0040 |
|
|
|
θo |
R1 (cm) |
R2 (cm) |
R3 (cm) |
Ravg (m) |
sin(2θ)
|
|
10.0 |
91 |
92.5 |
94 |
|
|
|
20.0 |
122 |
166 |
119.5 |
|
|
|
30.0 |
154.5 |
153 |
147 |
|
|
|
45.0 |
179 |
179.5 |
178 |
|
|
|
55.0 |
172.5 |
173.5 |
176 |
|
|
The horizontal range equation is given by:
2
0
0
)
() sin(2
v
g
R
q
=
In the current form, the relation between the range R along x and the angle of launch θ0 is not linear. However, we can linearize this relation by plotting R vs sin(2θ0), in other words, if you call y = R and x = sin(2θ0), the range equation adopts a straight line equation of the form y = a.x.
Use Excel (or any other package of your choice) to plot sin(2θ) vs. R and fit the data points to a straight line. Compare the slope obtained from fitted results to its real value predicted by the range equation
Data analysis:
Conclusion
Engineering/Physics Department
