February 28th, 2020, Roller derby course
For our assignment we were tasked with constructing a mechanism that would be able to roll down a ramp with 5 degree incline and 2 meters in length.
We designed a cylinder like carrier. It was 2 equal side circles with a box in the middle. The box was to store the mass and we did it so that we could have a smaller rotational inertia if the mass was centered and a lower rotational force would increase the angular speed. We used cardboard to construct our model because we knew it would be durable and easy to glue. Originally we had straws in between our two equivalent circles be we thought it would make it roll better but instead it made the process of adding and removing the mass more difficult and it also increase friction which made our carrier slower. We ended up removing it at the end. For our calculations i started off by finding the hight of the ramp by setting up a model and using trigonometry. I found that the height would be .1743 meters. I then set up an energy equation of UGi + KEi = UGf + KEf. From this I solved for ω and I got .89 rotations per sec. I plugged it into the rotational kinematic equation and ω = ωi + 1/2 α t^2 and I plugged in Δω/Δt and I found the time to be 2 seconds. I solved for the the rotational inertia by plugging in my known mass and radius into I = m(r^2) and got 1.25 kg m^2.
For our assignment we were tasked with constructing a mechanism that would be able to roll down a ramp with 5 degree incline and 2 meters in length.
We designed a cylinder like carrier. It was 2 equal side circles with a box in the middle. The box was to store the mass and we did it so that we could have a smaller rotational inertia if the mass was centered and a lower rotational force would increase the angular speed. We used cardboard to construct our model because we knew it would be durable and easy to glue. Originally we had straws in between our two equivalent circles be we thought it would make it roll better but instead it made the process of adding and removing the mass more difficult and it also increase friction which made our carrier slower. We ended up removing it at the end. For our calculations i started off by finding the hight of the ramp by setting up a model and using trigonometry. I found that the height would be .1743 meters. I then set up an energy equation of UGi + KEi = UGf + KEf. From this I solved for ω and I got .89 rotations per sec. I plugged it into the rotational kinematic equation and ω = ωi + 1/2 α t^2 and I plugged in Δω/Δt and I found the time to be 2 seconds. I solved for the the rotational inertia by plugging in my known mass and radius into I = m(r^2) and got 1.25 kg m^2.
November 11th, 2019 Space Station Project
https://docs.google.com/presentation/d/1tBel-iaeLmo2AG0GShZdqgDiq2d_k61CohNB7kf1T3E/edit?usp=sharing
- Goals statements
- What is it: A functioning space station that is called the International Space Ozone Reconstruction (ISOR)
- Who is it for: The Ozone layer crisis is something that effects the entire world, the restoration of it would be beneficial to all living beings on planet Earth.
- Market Research
- Why is this good: Climate change is an issue that is pending a resolution. In future years, due to rising sea levels, cities like New York, Miami, and Shanghai are expected to be submerged under water. In countries such as China large, rates of pollution cause carbon emissions to harm the ozone layer. The most effective solution to improving the environment is changing the habits of major companies and people, but this has proved to be optimistic, and with the time given a quick solution is needed. Our space shuttle provides this fast solution and approaches the issue from a different method than what is commonly implemented (lowering carbon emissions being produced to heal the ozone layer form the inside). Our space shuttle will rebuild the ozone layer and will improve the environment. The Ozone layer is comprised of O3 which is observed on earth being created by lightning. In space, the ozone layer gets its O3 from high UV rays creating a chemical process and breaking down the molecules. Our laser will shoot out a beam of intense UV rays which will be aimed at high oxygen concentrated pockets on earth. When the large holes in the ozone layer and pockets of oxygen align, the laser will shoot the UV ray to create O3 thus repairing the ozone layer.
- Why is this better than others: While other focused on creating a profit through their space shuttles, we took the moral high ground and decided to do something that would help all living organism on Earth. Those who did have research facilities as their purpose for their space station, did not have a purpose that was distinct and helpful to the majority of the world. Our space station, overall, is the best choice to fund because it has the best interest of everybody and raises the question "what is the purpose of having wealth if there is no world to exist on?".
- Technical report
- Height of Orbit: 410,000 m
- Tangential Speed: 7,664,408 m/s
- Angular Velocity: 3,485 rad/s
- Centripetal Acceleration: 6.07 m/s^2
- Dimensions:
- Overall:
- Circumference 2199.114858 m
- Width: 50 m
- Radius: 350 m
- In depth:
- Medical center: 16m x 50m
- Science lab: 300m x 50m
- Luxury residents: 7000m x 50m
- Agricultural center: 1200m x 50m
- Docking station: 10m x 50m
- Storage center: 533.11m x 50m
- Overall:
- Its use:
- Medical center: A center to heal and rehabilitate residential scientists.
- Science lab: For data collection and control room for the UV ray laser.
- Luxury residents: Luxury residential suites for scientists on the space station.
- Agricultural center: With our purpose being to improve the environment, we wished to have a self sustaining society onboard of the station. The agricultural center would be a section dedicated to farming and growing fresh produce (this would cut down on the cost of importing food to the space shuttle as well as provide alternative means to eating during emergencies).
- Docking station: The area in which other space shuttles can dock on our station.
- Storage center: This would be an extra room for storage and could be used for variety of things. Overtime we expect this area to develop as needed.
- Launch cost: $8,771,224,808.40 - Feature cost: $33,850,000 - Total cost: $8,805,074,804.4
https://docs.google.com/presentation/d/1tBel-iaeLmo2AG0GShZdqgDiq2d_k61CohNB7kf1T3E/edit?usp=sharing
October 10th, 2019 Newtons Laws infographic
September 27, 2019 Broom and Bowling Ball activity
Today in class we did an activity in which we push a bowling ball through an obstacle course with a broom and without hitting the course or extraneous items. We also weren't allowed to use any of the hard part of the broom but rather only the bristles to push. After running the activity we learned that this was related to inertia and force. We concluded from the activity that the challenges we faced were from controlling the ball and its speed and direction. We found out that this was due to inertia, the tendency of an object to resist change in a state of motion (velocity). We ran the activity again and this time we also did it with a basketball which proved to be easier. We concluded this was due to mass which we defined as the measure of an objects resistance to acceleration. We also discussed the amount we should push and how we should stop the ball to control the movement. We later stated this was force and we defined force as the ability to cause a change in state of motion of an object. Below we is an image of my groups diagram to represent the journey of the ball. Our groups graph was more written while other groups had arrows to represent direction and force.
Today in class we did an activity in which we push a bowling ball through an obstacle course with a broom and without hitting the course or extraneous items. We also weren't allowed to use any of the hard part of the broom but rather only the bristles to push. After running the activity we learned that this was related to inertia and force. We concluded from the activity that the challenges we faced were from controlling the ball and its speed and direction. We found out that this was due to inertia, the tendency of an object to resist change in a state of motion (velocity). We ran the activity again and this time we also did it with a basketball which proved to be easier. We concluded this was due to mass which we defined as the measure of an objects resistance to acceleration. We also discussed the amount we should push and how we should stop the ball to control the movement. We later stated this was force and we defined force as the ability to cause a change in state of motion of an object. Below we is an image of my groups diagram to represent the journey of the ball. Our groups graph was more written while other groups had arrows to represent direction and force.