The propose of this lab was to explore Newton’s 2nd Law , The law of conservation of energy, Velocity and acceleration and Power. We had to use the Lego Mindstorm motor in order to lift weights with a pulley. Also, we used the below VI for this experiment .
First , we Explored Newton second law by keeping the power level fixed and changing the mass . Then we kept the mass fixed and change the power level.
When we kept the power level fixed and changed the mass we found that power level and acceleration are in direct relationship
| power level | acceleration |
|
75 |
28.352045 |
|
85 |
30.978509 |
|
95 |
33.274113 |
|
105 |
41.293876 |
|
115 |
47.209877 |
After that when we kept the mass fixed and change the power level ,we found out that mass and acceleration are in inverse relationship
| MASS | acceleration |
|
0.25 |
28.352045 |
|
0.2 |
30.978509 |
|
0.18 |
33.274113 |
|
0.14 |
41.293876 |
|
0.12 |
47.209877 |
second , by Computing we explored the law of Conservation of energy. By making the power fixed we plotted the battery discharge and the energy as a function of mass
| potential | battery |
|
0.59584 |
111 |
|
0.65856 |
120 |
|
0.784 |
125 |
|
0.72128 |
139 |
From that, we can see that the greater the masses , the greater is the battery discharge .
Finally , by using the formula
We calculated the average power used by the motor. Then , we plotted the power used as a function of the power level of the motor .
| battery dis | power(mgh/t) |
|
83 |
0.285922684 |
|
97 |
0.297646166 |
|
111 |
0.013516775 |
|
125 |
0.264884319 |
|
139 |
0.243911111 |
