1. When the helicopter is moving at a constant velocity, is there a net force acting on it?
No
2. The helicopter first moves up, and then you caused it to hover (or attempted to cause it to hover). Did there have to be a negative net force acting on the craft at some point for this to occur? Why?
Yes, because you must slow the helicopter down.
|
|
Force |
Acceleration |
|
Data
point 1 |
1000
N |
.49 |
|
Data
point 2 |
5000
N |
2.45 |
3. Does the acceleration change with the net force? What is the mathematical relationship of acceleration and net force?
Yes. F=ma
4. What is the mass of the helicopter? How did you determine it? Answer not submitted
5. What lift force was required to save the day?
32,000 N
|
|
Speed |
Force |
|
Data
point 1 |
5.62
m/s |
250 N
|
|
Data
point 2 |
7.94
m/s |
500 N
|
|
Data
point 3 |
9.73
m/s |
750 N
|
|
Data
point 4 |
11.24
m/s |
1000
N |
6. Look at your data. How does the force of air resistance vary with the speed of the helicopter? Does the force of air resistance increase as helicopter speed increases, decrease as helicopter speed increases, stay the same, or is there no relationship at all? Use your data to justify your answer.
Air resistances increases as the speed increases.
7. Using the guidelines above, is the relationship between air resistance force and helicopter speed a linear, inverse, or squared relationship? Or is there no relationship at all? Justify your answer using your data.
As the speed increases , the air resistance also increases. Therefore, after graphing my above data points, I found the relationship to be a squared relationship.
8. What horizontal thrust force is required for the helicopter to have zero horizontal velocity? To be moving at a constant horizontal velocity?
In order for the horizontal velocity to be zero, the thrust force also has to equal zero. However, in order for it to have a constant horizontal velocity, the thrust force has to equal the air resistance force.
9. What is the required lift force? Given this lift force, what are the net horizontal and vertical forces? Answer not submitted