Rocket Project
Rocket log:
Day 1:
On the first day we started making our plans and design for the rocket. This is all we did, we spent the whole class time thinking about what our rocket would look like.
Day 2:
The second day we did the same, and started collecting supplies. Camryn brought the bottles, Piper brought the plexi-glass, and Hailey bought another bottle and spray paint.
Day 3:
We had our first test launch and we decided not to launch our rocket because our nose cone was not done yet. We started cutting and gluing bottles.
Day 5:
We drew our fin designs., and spray painted.
Day 6:
We cut and glued our fins on. We also made some modifications to the designs.
Day 7:
We could only make our parachute because our fins were still drying.
Day 8:
We launched our rocket for the first time in our last text launch. We had a successful launch and our parachute deployed.
Day 9:
Hailey went to the exhibition and successfully launched our rocket. It had a few leaks but didn't explode on the launch pad.
Rocket specs and flight information:
Rocket Reflection
My rocket only had one practice launch and it didn't turn out very well. It was not epoxied enough on the side where we attached the other bottle so it leaked out the side. It still flew, but it didn't get very high. It was kind of a failure. It was also very embarrassing, for me at least, I don't know about my team mates though. I worked on the project with Hailey and Camryn. Working on this project with team mates made it a lot easier to get the project done, even though we weren't very efficient during every class. It didn't take too long of a time to build our rocket, and through the process I learned a lot.
Having our rocket fly, but shoot water out everywhere, wasn't really the best feeling. We did kind of fail at exhibition, even though we weren't the worst team. Our rocket didn't go very high and I wish that we could have fixed it more before exhibition. Our parachute did deploy which was good, but the parachute also stopped our rocket from getting very high too. I think the project was very fun and challenging at the same time with how you had to make your rocket and it had to fly and it had to have a parachute, and that had to deploy and the fact that we just jumped right into the project, but I still loved it.
Conclusion:
The Rube Goldberg Project
Calculation 1: Velocity of the marble rolling down the
top track towards the lever.
Equation: V= (Velocity= )
d
t
distance
time
Track length(m): 29cm=.29m
Time(s): 1.67s
Final Equation: V= =.1737m/s
.29m
1.67s
The velocity of the marble rolling down the track is 0.1737
meters/second.
Calculation 2: Potential energy of the hanging knife.
Equation: PE=mgh (Potential energy=mass• gravity •
height)
Mass(kg): 318.14g=3.1814kg
Height(m): 16.5cm=.165m
Acceleration of gravity: 9.8m/s²
Final Equation: PE=3.1814kg*9.8m/s*.165m=5.113 J
The potential energy of the hanging knife is 5.113 Joules.
Calculation 3: Kinetic energy of a marble rolling down
the orange track.
Equation: KE=½ mv² (Kinetic energy=½ mass • velocity²
Mass(kg): 5.91g=.0591kg
Distance(m): 19.5cm=.195m
Time(s):
Trial 1: .85s
Trial 2: .72s
Trial 3: .61s
Avg. Time=.727s
Velocity Equation: V=.159m •.727s=.142
Final Equation: ½ (.0591kg•.727m/s²)=5.958462 x10⁻⁴ J
Kinetic energy of the marble rolling down the orange track
is 5.958462 x10⁻⁴ Joules
Calculation 4: Hang time of the weight falling onto the
clothespin.
Equation: hang time= (hang time= √
d
.5g
√
distance
half of gravity
Distance(m): 12.5cm=.124m
Half of gravity(m/s): 4.9m/s ²
Final Equation: hang time= =.16s √
.125m
4.9m/s²
Hang time of the weight falling onto the clothespin is 0.16
seconds.
Calculation 5: Mechanical advantage of the wooden
lever that releases the hanging weight.
Equations:
Fr
MA= (Mechanical advantage= )
Fe effort force
**or**
di
MA= (Mechanical advantage= )
do
resistance force
input distance
output distance
Amount of force from the end of the lever: .2 N
Amount of force at base of lever: 1.8 N
Final Equation: 1.8÷ .2=9
The mechanical advantage of the wooden ever that
releases the hanging weight is 9.
Calculation 6: Momentum of marble rolling down the
cardboard track.
Equation: P=m• v (Momentum=mass• velocity)
Mass(kg): 5.82g=.0582kg
Distance(m): 45cm=.45m
Time(s):
Trial 1: .81s
Trial 2: .69s
Trial 3: .94s
Avg. Time=.813s
Velocity Equation: V=.45m•.813s=.366m/s
Final Equation: .058kg•.366m/s=.021kg• m/s
The momentum of the marble rolling down the cardboard
track is 0.021kg• m/s
Calculation 7: Impulse of knife cutting fruit.
Equation: F= (Force= )
Pf−Pi
t
final momentum−initial momentum
change in time
To find the change in time, we used frames from a video
to determine how long it took the knife to drop onto the
fruit.
ᵱt=.08s
Velocity calculations:
From the video, we had determined that the knife fell
14cm in .08s. We also needed to convert cm to m.
Velocity Equation: =1.75m/s 0.08s
0.14m
Momentum calculations:
Mass of banana (kg): 149.5g=1.495kg
Pf =1.495kg• 1.75m/s=2.61625kg• m/s
Final Equation: 0.08s
The impulse of the knife cutting the fruit is 32.7 N.
2.61625kg•m/s
=32.7 N
Calculation 8: Work done by the marble on the PVC
pipe hitting the domino.
Equation: W=F• d (Work=force• distance)
we used a force gauge to measure how much force the
marble exhibited on the domino.
Force (N): 1.15 N
We also used a video camera and went frame by frame to
determine how long the marble impacted with the domino.
It was about half of a frame.
1 video frame=0.04 seconds
Distance from video frames (s): 0.02s
Final Equation: W=1.15 N• 0.02s=0.023 J
The work of the marble hitting the domino is 0.023 Joules.
top track towards the lever.
Equation: V= (Velocity= )
d
t
distance
time
Track length(m): 29cm=.29m
Time(s): 1.67s
Final Equation: V= =.1737m/s
.29m
1.67s
The velocity of the marble rolling down the track is 0.1737
meters/second.
Calculation 2: Potential energy of the hanging knife.
Equation: PE=mgh (Potential energy=mass• gravity •
height)
Mass(kg): 318.14g=3.1814kg
Height(m): 16.5cm=.165m
Acceleration of gravity: 9.8m/s²
Final Equation: PE=3.1814kg*9.8m/s*.165m=5.113 J
The potential energy of the hanging knife is 5.113 Joules.
Calculation 3: Kinetic energy of a marble rolling down
the orange track.
Equation: KE=½ mv² (Kinetic energy=½ mass • velocity²
Mass(kg): 5.91g=.0591kg
Distance(m): 19.5cm=.195m
Time(s):
Trial 1: .85s
Trial 2: .72s
Trial 3: .61s
Avg. Time=.727s
Velocity Equation: V=.159m •.727s=.142
Final Equation: ½ (.0591kg•.727m/s²)=5.958462 x10⁻⁴ J
Kinetic energy of the marble rolling down the orange track
is 5.958462 x10⁻⁴ Joules
Calculation 4: Hang time of the weight falling onto the
clothespin.
Equation: hang time= (hang time= √
d
.5g
√
distance
half of gravity
Distance(m): 12.5cm=.124m
Half of gravity(m/s): 4.9m/s ²
Final Equation: hang time= =.16s √
.125m
4.9m/s²
Hang time of the weight falling onto the clothespin is 0.16
seconds.
Calculation 5: Mechanical advantage of the wooden
lever that releases the hanging weight.
Equations:
Fr
MA= (Mechanical advantage= )
Fe effort force
**or**
di
MA= (Mechanical advantage= )
do
resistance force
input distance
output distance
Amount of force from the end of the lever: .2 N
Amount of force at base of lever: 1.8 N
Final Equation: 1.8÷ .2=9
The mechanical advantage of the wooden ever that
releases the hanging weight is 9.
Calculation 6: Momentum of marble rolling down the
cardboard track.
Equation: P=m• v (Momentum=mass• velocity)
Mass(kg): 5.82g=.0582kg
Distance(m): 45cm=.45m
Time(s):
Trial 1: .81s
Trial 2: .69s
Trial 3: .94s
Avg. Time=.813s
Velocity Equation: V=.45m•.813s=.366m/s
Final Equation: .058kg•.366m/s=.021kg• m/s
The momentum of the marble rolling down the cardboard
track is 0.021kg• m/s
Calculation 7: Impulse of knife cutting fruit.
Equation: F= (Force= )
Pf−Pi
t
final momentum−initial momentum
change in time
To find the change in time, we used frames from a video
to determine how long it took the knife to drop onto the
fruit.
ᵱt=.08s
Velocity calculations:
From the video, we had determined that the knife fell
14cm in .08s. We also needed to convert cm to m.
Velocity Equation: =1.75m/s 0.08s
0.14m
Momentum calculations:
Mass of banana (kg): 149.5g=1.495kg
Pf =1.495kg• 1.75m/s=2.61625kg• m/s
Final Equation: 0.08s
The impulse of the knife cutting the fruit is 32.7 N.
2.61625kg•m/s
=32.7 N
Calculation 8: Work done by the marble on the PVC
pipe hitting the domino.
Equation: W=F• d (Work=force• distance)
we used a force gauge to measure how much force the
marble exhibited on the domino.
Force (N): 1.15 N
We also used a video camera and went frame by frame to
determine how long the marble impacted with the domino.
It was about half of a frame.
1 video frame=0.04 seconds
Distance from video frames (s): 0.02s
Final Equation: W=1.15 N• 0.02s=0.023 J
The work of the marble hitting the domino is 0.023 Joules.
Map Project
Map Methodology
In order to create our map we first recorded how many steps it took walk to a certain point then recorded the direction. Whenever the direction changed we would start the process over. To turn theses bearings into our map we oriented ourselves north by drawing a compass rose and set a scale of one step to one millimeter. Then we took the bearings and set it at the degrees we recorded while hiking, then took the number of steps and drew them in millimeters on the paper. When plotting contour lines we selected area we were mapping in google earth. Then we set the sea level at 5 foot intervals and drew the the contour lines around our map as they looked on google earth. These contour lines are important because they tell the hiker how steep the terrain is. This space on the map is a small area relative to the size of twin butes but would be considered a relatively large lot of property in comparison to your average amount of land in a 21st century suburb.
In order to create our map we first recorded how many steps it took walk to a certain point then recorded the direction. Whenever the direction changed we would start the process over. To turn theses bearings into our map we oriented ourselves north by drawing a compass rose and set a scale of one step to one millimeter. Then we took the bearings and set it at the degrees we recorded while hiking, then took the number of steps and drew them in millimeters on the paper. When plotting contour lines we selected area we were mapping in google earth. Then we set the sea level at 5 foot intervals and drew the the contour lines around our map as they looked on google earth. These contour lines are important because they tell the hiker how steep the terrain is. This space on the map is a small area relative to the size of twin butes but would be considered a relatively large lot of property in comparison to your average amount of land in a 21st century suburb.