Detailed and comprehensive Written lab proposal for physics investigation answering the guided question "What is the nut position for which the physical pendulum small-angle period is minimum?". Document includes lab procedure, experimental data collection process, and analysis.
Investigation 3 Proposal, Group 4
Group members: R cca Buck, Magg
Instructor: Ismail Ibrahim
Date: 11/16/2021
The Guiding Question…
What is the nut position for which the physical pendulum small-angle period is minimum?
What Data will you collect?
The data we will collect is the pendulum length for each trial, and the period (time in seconds) for each
trial. After the experiment we will calculate the x-axis by using the equation T2 and the y-axis by using
the equation 4pi2(L). Using the pendulum length and period of time, and the x-axis and y-axis we will
create graphs for those two. We will then use the data analysis in Excel to find the regression, which will
give us our acceleration. Essentially, to find the small-angle period that is minimum, we will be looking at
which nut position has the smallest time period.
How will you collect your data?
First, we will put together the physical pendulum by using lab kit materials. Then we will complete our
experiment using the following procedure:
1. Attach the three nuts in contact with each other to the bottom of the rod, 55cm from the
bottom of the eye nut to the center of the middle nut, hanging from the door hook
2. Pull the pendulum back 30 degrees to the right
3. Release the pendulum and time its movement as it swings to the left, and back to the right.
4. Stop the timer when the pendulum has swung back to the right.
5. Repeat five times in order to find the average period.
6. Move the nut to 50cm from the top of the rod and repeat steps 2-5. Remember to measure
from the middle nut.
7. Complete experiment for positions (D) of: 55 cm, 50cm, 45 cm, 40cm, 35cm, 30cm, 25cm, 20cm,
15cm, and 10cm.
8. Upload the data to an Excel spreadsheet
9. Compare the average period times of each position to answer the guided question.
10. Calculate the variable transformation by using the equations: 4pi2(L) and T2.
11.
Plot the pendulum length vs. time period, and the variable transformation data.
12. Complete the linear regression analysis to find the acceleration
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