Objective:
- Newton’s 2nd Law i.e. F=ma
- The law of conservation of energy
- Velocity and acceleration
- Power
Newton’s 2nd Law i.e. F=ma:
a) The acceleration does vary with mass.
b) The acceleration does vary with the power levels.
Mass (kg) | Acceleration (rpm/s) | Power Level (%) | Acceleration (rpm/s) | |
0.25 | 40.869839 | 100 | 89.66584 | |
0.2 | 42.477848 | 75 | 42.477848 | |
0.15 | 47.462272 | 50 | 16.984233 | |
0.1 | 65.160454 | 25 | 1.343651 |
Explore the Law of Conservation of Energy:
a) Computing Potential Energy = mgh
mgh (J) |
0.6125 |
0.49 |
0.3675 |
0.245 |
0.49 |
0.49 |
0.49 |
0.49 |
b)
Mass (kg) | Battery Discharge (MV) |
0.25 | 111 |
0.2 | 69 |
0.15 | 13 |
0.1 | 41 |
The battery discharge increases as the mass increases.
Calculate the average power used by the motor:
Power Level (%) | Power (watt) |
100 | 0.343618513 |
75 | 0.730253353 |
50 | 0.150030618 |
25 | 0.040013065 |
As the Power Level increases the Power should increase as well. The slope is 0.006 and the intercept is -0.0568.
Does the time is important in this experiment ?