I feel that I showed perseverance and creativity throughout building our PBL apparatus. Particularly because we spent most of our time testing our model with materials that didn’t work and our apparatus did not start doing usable work until the last few days of building. Even though our apparatus was quite unstable and could not do any usable work for a majority of the building process, we persevered and continued to make changes to our model as needed and in the end, we were able to create a successful gravity light.
Rebuilding and making changes required us to think more creatively, though not all of our ideas worked. For example, we needed a way to create more friction between the rope and the wheel so we came up with the idea to add a layer of tape around the rope. This stiffened the rope making it unusable for our model. Some of our ideas did work and ended up being a very big help in the end. We were unable to get the wheel to turn the geared motor because the motor was too hard to turn so we decided to use a plastic gear attached to a motor and it ended up working exactly how we wanted it to work.
Collaboration + Team Work
In any sort of group project, it’s important that you are collaborating and working with your group mates. Everyone has ideas that your group could benefit from hearing and that is why it’s crucial that you are listening to what everyone has to say and encouraging everyone to share their thoughts. Each group member will have different strengths and its also important to utilise each members’ individual strength so that everyone is making the most out of their abilities and contributing their best qualities to the group.
We ran into many difficulties throughout this project and had we not worked together as a group and listened to each others ideas, we likely would not have completed building the apparatus. Our team was very good at collaborating and remaining calm even when we were working through obstacles in building our model. There were times when we got frustrated with each other but never a moment when we had gotten frustrated to the point where we weren’t able to work through it.
I enjoyed this video the most because the group of people worked together to look at every one of their options and took into consideration each individuals needs.
We started out by following a DIY tutorial on how to build a gravity light on YouTube however, there were many materials that we were missing. We decided to modify the original design of the gravity light. We have collected most of our materials although we may need more as we continue building and developing our design.
2) Where are we going?
We have attached a motor to the gear so when the gear turns, so does the motor. We will attach a light to the motor so that it will light up when the motor turns. We also plan on attaching the gear to the wheel which will act as the larger gear. The larger gear will turn the smaller gear very quickly. We have already drawn up a sketch of our model though it may need modifying as we build.
3) Next Steps
– Bike wheel
– Bungee rope
– LED light
Our team has not assigned specific roles to each person as we would prefer to work collaboratively but we may assign different responsibilities to each person – such as gathering extra materials – should the need arise.
Serena and I created an electrical motor and generator using a foam cup, copper wire, paper clips, and magnets. For the motor, we attached two magnets together through the cup. There is a constant interaction between the magnet and the coil due to the electricity being transferred through the wire. The two magnetic fields are attracting and repelling each other constantly which causes the coil to spin. When the electricity is turned off, the magnetic field around the copper wire disappears and the coil stops spinning.
For the generator, we attached alligator clips to the paper clips that connected to the Voltameter. We then spun the copper coil to generate electricity. Spinning the coil changes the location of the electrons in the copper relative to the magnet. You could also generate electricity by moving the position of the magnet. The constant movement of the electrons pushes them around which creates electricity.
It starts off with a blowdryer which blows the marble off of the doorstop and through the toilet roll tube. This is an example of electric energy. Electricity was transferred through the wire to the hair dryer. This is also an example of wind energy which is a specific form of kinetic energy. The marble pushed the car which knocked over the dominoes and the car tipped off the tube and rolled down the ramp. Before it rolled down, the car had gravitational potential energy. The cars kinetic energy was transferred to the candy in the tube at the bottom of the ramp and the candy shot out of the tube. Besides wind energy, GPE, and electric energy, heat and sound were also types of energy that were released as waste energy and did nothing to affect the overall result of our model.