jockdisvdude
Senior member
Is anyone else doing a pendulum lab like me in physics ?
Pendulum Lab
Purpose: Our lab is to determine how an independent variable, which is the length of a string, affects the dependent variable, which is the time of a period.
Apparatus and Procedure: 1.
2. Step 1: Obtain an apparatus, fastener with rod, stopwatch, string, tape, and weight. Step 2: Attach the fastener with rod to the apparatus. Step 3: Tape the string to the rod and measure one meter of distance for the string. Step 4: Connect the weight to the string via a loop at the end of the string. Step 5: Measure an angle of 30° for the string. Step 6: Drop the weight and start the stopwatch to obtain how long it takes to complete 5 periods. Step 7: Record the data. Step 8: Repeat steps 5-7 a total of 8 trials.
3. The variables kept constant were the weights (200g), the angle of which the weight was dropped (30°), and a total of 5 periods were recorded per trial.
Data: 1.
Length (m) Period (sec)
1.06 10.4
0.88 9.84
0.77 9.18
0.63 8.38
0.55 7.58
0.41 6.99
0.31 5.88
0.21 4.80
0.08 4.50
0.00 0.00
Evaluation of Data: 1.
2. General Equation:
Conclusion: 1. The length of the string did have an affect on the time of the period. As the independent variable decreases, the dependent variable also decreases, in other worlds the time of the period decreased as the length of the string decreased.
2. The X and Y variables were reversed because it allowed the slope of the equation to have a more meaningful definition.
3. In our lab, the y-intercept was equal to zero. The y variable which represented time of the period was appropriate because it is assumed that when the length of the string is equal to zero, the time of the period also is zero.
4. In order to obtain more accurate results, increasing the number of periods per trial will help. In our lab, we could have allowed the same person who dropped the weight to also time the stopwatch thus allowing minimal time difference from when the stopwatch actually started to when the weigh was actually dropped.
5. If we had another 2 hours to do more experiments, this lab could be extending my creating more trials. We could also have groups do different angles and weights.
Pendulum Lab
Purpose: Our lab is to determine how an independent variable, which is the length of a string, affects the dependent variable, which is the time of a period.
Apparatus and Procedure: 1.
2. Step 1: Obtain an apparatus, fastener with rod, stopwatch, string, tape, and weight. Step 2: Attach the fastener with rod to the apparatus. Step 3: Tape the string to the rod and measure one meter of distance for the string. Step 4: Connect the weight to the string via a loop at the end of the string. Step 5: Measure an angle of 30° for the string. Step 6: Drop the weight and start the stopwatch to obtain how long it takes to complete 5 periods. Step 7: Record the data. Step 8: Repeat steps 5-7 a total of 8 trials.
3. The variables kept constant were the weights (200g), the angle of which the weight was dropped (30°), and a total of 5 periods were recorded per trial.
Data: 1.
Length (m) Period (sec)
1.06 10.4
0.88 9.84
0.77 9.18
0.63 8.38
0.55 7.58
0.41 6.99
0.31 5.88
0.21 4.80
0.08 4.50
0.00 0.00
Evaluation of Data: 1.
2. General Equation:
Conclusion: 1. The length of the string did have an affect on the time of the period. As the independent variable decreases, the dependent variable also decreases, in other worlds the time of the period decreased as the length of the string decreased.
2. The X and Y variables were reversed because it allowed the slope of the equation to have a more meaningful definition.
3. In our lab, the y-intercept was equal to zero. The y variable which represented time of the period was appropriate because it is assumed that when the length of the string is equal to zero, the time of the period also is zero.
4. In order to obtain more accurate results, increasing the number of periods per trial will help. In our lab, we could have allowed the same person who dropped the weight to also time the stopwatch thus allowing minimal time difference from when the stopwatch actually started to when the weigh was actually dropped.
5. If we had another 2 hours to do more experiments, this lab could be extending my creating more trials. We could also have groups do different angles and weights.
