Skip to main content

A Bridge Made of Sticks?

 This is an Action Project for my core class Urban Planning. This unit has been all about bridges, equations, gravity, and Newton's Laws. This action project requires us to make a bridge out of popsicle sticks and glue. We are going to take the bridge and put 1 gallon of water on top of it to see if it will not break. This is an excellent idea because it shows gravity and its effect on objects. Newtons three laws are 1. An object will not change its motion unless acted on by an outside force. 2. F = M x A. 3. Every action has an equal and opposite reaction. With these bridges, we also need to calculate the Potential/Kinetic energies, angles, and lengths of each triangle in the bridge. Below is an image demonstrating the parts of my bridge that experience compression/tension, and all of the important pieces of the bridge. 

CJH/Bridge Visualisation/2021

Calculations:

How many sticks did you use?


At least 60 sticks.


How high will you bridge be when you put a gallon of water on it?


3 feet at least.


Choose one of the triangles of your bridge and measure all three sides.


Side 1: 6 inch

Side 2: 6 inch

Side 3: 8 inch


Law of Cosine: Angle 1


cos C = 6^2 + 6^2 - 8^2 / 2(6 x 6)

36 + 36 - 48 / 2 x 36 = 48.1897 degrees.


Law of Sine: Angle 2


sine 48.1897/6      sine B/6


289.1382 = sine B6


48.1897 = B


Subtract: Angle 3 (a triangle has a total of 180 degrees)


96.3794 - 180 = 83.6206


Potential energy:


.105 kg x 9.8 x 0.9144 = 3.087


Kinetic energy:

½ x m x v^2 = KE



Below you can see the finished product of my truss bridge with the gallon of water sitting on top along with my inspiration bridge. 

CJH/Bridge Holding Gallon/2021

Image result for warren truss bridge | Truss bridge, Warren truss, Bridge construction
Pinterest/Warren Bridge/2020

For my bridge design, it focuses on SDG 11 and the safety/sustainable portion of the SDG (Sustainable Development Goal). This was a very difficult project because of the amount of calculations and portions of this project I had to complete. The building of my bridge took at least a week because it kept falling apart and the glue wouldn't keep it up. I was able to overcome this by placing weights and putting it against a wall. Thankfully my bridge was able to hold a gallon of water without falling. If I could go back and redo a part of this project, I would try and remake the bridge now that I know how to make it sturdier and an easier way to make it. 

Comments

Post a Comment

Popular posts from this blog

Cardboard Camera?

 This is an Action Project for my core class Light, Sound, and Time. During this Unit, we learned all about light and how it works. We also learned about how light is a part of the visible spectrum. This is a spectrum that shows the types of waves/rays that are on earth. The visible spectrum is also how we see colors. This has also helped us better understand what light is and how we use it to take pictures. For example, when you take a picture using a camera, light is used to leave a image captured onto a surface. For this project, I was tasked with making a camera from a tissue box. The camera I made is called a Camera Obscura. This camera takes light and through a little hole pastes the image onto a piece of parchment paper inside of the camera. As you can see below, those photos were taken from inside the camera when held up to a light. It also shows what the camera looks like and how it turned how after creating it. Pinhole of Camera Obscura/CJH/2021 Image of Light in Camera/CJH/2
2 comments
Read more

What is a Hysterectomy?

Welcome to my blog. This is an Action Project for my core class Cure. In this unit, we have been at home talking about cells, what they are, and what they are made up of. We have also taken the time to look at different types of surgeries. Also, we had two special FE guests join us through Zoom and teach us about themselves and what they know to help us get a clearer understanding. The two guests who joined us were Dr. Neeraj Jain and Kellee Athens. For this assignment, we were tasked with interviewing someone who has had any surgery performed on them. For the interview, I chose to interview someone about the surgery they had done. The surgery that was performed was a Hysterectomy which is the removal of the uterus. I have put together a slideshow below explaining all of the risk factors, side effects, and much more detail on how the surgery is performed. "No dietary restrictions. I was super groggy and just slept a lot. I was in the hospital for 1 or 2 days. It took me a week to
1 comment
Read more

Drawing for 12 Hours with Only a Pen

 This is a project for my core class Endurance. For this project, I spent twelve hours doing one thing. This class was all about what is endurance? We started the course by defining endurance and looking at historic people who had to. endure something for a specific amount of time. I spent time trying to figure out what you need in order to endure something for a period of time. In order to endure something, you have to be strong-willed, unbreakable, and willing to face hardship and know that it won't be fun or pleasant. So what is endurance? Endurance is being able to push through a hardship/inconvenience. Being able to endure something is one of the hardest things in the world. Especially when it isn't something you choose to do. Forced endurance is something that many people throughout history had to go through. A specific example we looked at was Ellie Wiesel and how he and his family and his whole culture was tortured and killed over the span of years. Ellie lost all of hi
Post a Comment
Read more