MASss damper building physics project
In this project, I tried to replicated buildings that are earthquake-proof. These buildings contains pendulums (which is mass on strings) on the top of the building to stop the vibration.
The objective of this project is to see whenever that the pendulum does help with preventing the vibration or not. Moreover, I wanted to find the best length and best mass of the pendulum for the building. I did the experiment by building 5 building which includes control building (no pendulum), 2 cm pendulum building, 5 cm pendulum building, 11 cm pendulum building and 17 cm pendulum building. |
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I recreated the impact of earthquake by making a board with wheels to place the building on. This board will be connected to an elastic rope. I would pulled back the board to certain distance, and let go. The force of the elastic rope will pullback the boards and strike with a wooden plane. This will causes a vibration on all 5 buildings.
However, I did some mistakes by pulling the board back too far. The impact is too much that the building couldn't withstand. This resulted as the collapses of the buildings. I learned from the experiment failed and recreate the model again. |
We do not have the appropriate equipments to measure the vibration of the buildings. The only experiment we did is to count the time that the pendulum swings. We concluded the the longer the string, the longer the pendulum swings.
Moreover, by looking at the pendulum and the buildings, the control have the least vibration, while the building with the longest pendulum have the most vibration. Another factor that we didn't considered is the distance of the building from the impact point. The further the building, the least force. |
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From this physics project I learned many things. Firstly, I learned to cooperate with the others. In was a big project that we must build a lot of structures. I learned to divide the work equally and learned to set a goal ( also, time frame) for the assignment.
Elso's
Strategic Learners - Connect with past knowledges about physics to make this project.
Innovative Thinkers - Recreate the physics idea into real structures. Try to come up with new ideas to accomplish the project.
Innovative Thinkers - Recreate the physics idea into real structures. Try to come up with new ideas to accomplish the project.
ROcket Launcher Project
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In this project, our group wanted to demonstrate Newton's third law which is Action = Reaction. To do so, we designed a rocket that pushes the group in order to lift itself up.
The whole rocket was made by a cylinder container with a lid. We then pour in water into the container. As we put in effervescent (ENO) into the container, it causes a reaction. The reaction create enormous pressure inside the cylinder container. When the pressure inside out-win the lid to the container, the rocket lifted itself up. In the 10 first attempts of this rocket failed to push itself up. We could not find the perfect combination between the volume of water and the effervescent. We then later started to find the exact ratio and the rocket works. |
From this project that seemed easy at first, but it require exact measurements. After we failed several times, we did not give up. This project teaches me to try something new and learned that new methods is required for new results.
ESLO's
Strategic Learners - Connect with past knowledges about physics to make this project.
Innovative Thinkers - Think to methods to demonstrate the concept. Which took a lot of trails and errors.
Innovative Thinkers - Think to methods to demonstrate the concept. Which took a lot of trails and errors.