Today we explored Newton’s Second law, the law of conservation of energy and power. We used a mass that was hanged in a rope. We connected it to our robot to do the measurements.
1.Newton’s second law.
We kept the power level fixed and changed the mass. We saw that as the mass increased the acceleration increased. Then we kept the mass fixed and changed the power level. The acceleration increases.
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2. Potential Energy=mgh Height: 0.32 m and Gravity: 9.8 M/S^2 We found the potential energies for the given masses
| Mass | Potential Energy |
| 0.25 | 0.784 |
| 0.19 | 0.596 |
| 0.25 | 0.784 |
| 0.25 | 0.784 |
| 0.11 | 0.345 |
Our overal data was this
| Speed (RPM) | Battery Discharge (mV) | Mass (m) | Power | Time (s) | Acceleration (RPM/s) | Potential Energy (J) | Power Used |
| 80 | 28 | 0.25 | 75 | 2.398 | 33.36 | 0.784 | 0.327 |
| 85.35 | 55 | 0.19 | 75 | 2.234 | 38.2 | 0.596 | 0.267 |
| 45.85 | 56 | 0.25 | 50 | 4.264 | 10.75 | 0.784 | 0.184 |
| 115.3 | 70 | 0.25 | 100 | 1.727 | 66.78 | 0.784 | 0.454 |
| 92.66 | 69 | 0.11 | 75 | 2.207 | 41.98 | 0.345 | 0.156 |
3. Last we calculated the power which equals potential energy/ time. We graphed power level vs power used. The curve came out to be a straight line
