In this Experiment, my partner and I used the lego windstorm motor to lift weights with a pulley. We explored Newton’s 2nd law: F=ma with the pulley, we also explored Velocity, Power, Acceleration, and the law of conservation of energy by controlling the power, weight, and many other factors.
We basically chose a weight and a power to use for about 3 runs and recorded the following for each run:
- Millivolts (before and after)
- Rotation
- Height (m)
- Battery Discharge (mV)
- Speed (RPM
- Time (s)
- Acceleration (RPM/s)
Run 1
Power: 75
Mass (kg): 0.245
Height (m): .22
milliVolts (before): 8281
milliVolts (after): 8211
Rotation: 860
Battery Discharge (mV): 70
Speed (RPM): 82.5653
Time (s): 1.736
Acceleration (RPM/s): 47.5606
Run 2
Power: 75
Mass (kg): 0.205
Height (m): .22
milliVolts (before): 8253
milliVolts (after): 8198
Rotation: 873
Battery Discharge (mV): 55
Speed (RPM): 84.299
Time (s): 1.726
Acceleration (RPM/s): 48.8406
Run 3
Power: 75
Mass (kg): 0.165
Height (m): .22
milliVolts (before): 8281
milliVolts (after): 8142
Rotation: 851
Battery Discharge (mV): 139
Speed (RPM): 87.8769
Time (s): 1.614
Acceleration (RPM/s): 54.4467
Then after we did the 3 runs with the same power, we changed the power for the next 2 and kept a weight of 0.165 kg. then we repeated the process :
Run 4
Power: 60
Mass (kg): 0.165
Height (m): .22
milliVolts (before): 8198
milliVolts (after): 8087
Rotation: 975
Battery Discharge (mV): 111
Speed (RPM): 70.4073
Time (s): 2.308
Acceleration (RPM/s): 30.5058
Run 5
Power: 70
Mass (kg): 0.165
Height (m): .22
milliVolts (before): 8211
milliVolts (after): 8128
Rotation: 963
Battery Discharge (mV): 83
Speed (RPM): 82.6893
Time (s): 1.941
Acceleration (RPM/s): 42.6014
After recording all the information, we went on Excel and plotted graphs for each of the following:
