wk
preiou5
physics_chpt_2_lab_report.docxLab Report Name: ____________________
Section: ___________________
EXPERIMENT: Experimental Errors and Uncertainty
Data:
The data table that follows shows data taken in a free-fall experiment.
Measurements were made of the distance of fall (Y) at each of the four precisely measured times.
|
Time, t (s) |
Dist, y1 (m) |
Dist, y2 (m) |
Dist, y3 (m) |
Dist, y4 (m) |
Dist, y5 (m) |
<y> |
σ |
t2 |
|
0 |
0 |
0 |
0 |
0 |
0 |
|
|
|
|
0.5 |
1.0 |
1.4 |
1.1 |
1.4 |
1.5 |
|
|
|
|
0.75 |
2.6 |
3.2 |
2.8 |
2.5 |
3.1 |
|
|
|
|
1.0 |
4.8 |
4.4 |
5.1 |
4.7 |
4.8 |
|
|
|
|
1.25 |
8.2 |
7.9 |
7.5 |
8.1 |
7.4 |
|
|
|
Procedures:
From the above data perform the following Tasks.
Task 1. Complete the table.
Results 1:
Task 2. Plot a graph <y> versus t (plot t on the abscissa, i.e., x-axis).
Results 1:
Task 3. Plot a graph <y> versus t2 (plot t2 on the abscissa, i.e., x-axis). The equation of motion for an object in free fall starting from rest is y = ½ gt2, where g is the acceleration due to gravity. This is the equation of a parabola, which has the general form y = ax2.
Results 1:
Task 4. Determine the slope of the line and compute an experimental value of g from the slope value. Remember, the slope of this graph represents ½ g.
Results :
Task 5. Compute the percent error of the experimental value of g determined from the graph in part d. (Accepted value of g = 9.8 m/s2)
Results 5:
Task 6. Use a spreadsheet to perform the calculations and plot the graphs indicated.
Results 6: The spreadsheet with calculations graphs is attached as a separate attachment.
