Case Study #2

Floating Arm trebuchet

The floating trebuchet is good at throwing distance due to the counter weight.

this is why I think its the best cause it can throw.

http://www.rjones3.net/projects/floating-arm-trebuchet/

Positives:

• It provides with dimensions for the arm
• Base dimensions
• Great visual of the trebuchet

Negatives:

• doesn't give much information
• No steps to complete the trebuchet



Case Study #1
8/10

Floating Arm Trebuchet

 

The Floating arm trebuchet has a weight between two frames and the more weight you add, the more force the drop will have and the farther the projectile will go. this is a very fun trebuchet to make and it has very high potential if built well.

 

http://trebuchet.howtopool.com/Fat-Trebuchet2.htm

 

Positives:

• Great visual of the trebuchet
• Provides with all information to built trebuchet
• Provides dimensions for the trebuchet

Negatives:

• doesn't provide an ideal angle
• doesn't provide with how far it shoots

 

FASTER BLOG

In the Faster Lab my group of Zach, Finbarr and I had to use wooden pegs as a faster. Our design was going for a  hovering house or a beach house that's being held up by pegs. It was a very difficult because it took a while to get all the holes to line up with the right size of the wooden pegs. While in the process of building the house our group hit a setback when a piece of the wood snapped in two. After this happened we realized that we had to use smaller pegs because if we didn't the wood would had snap again. So we had to re-drill every hole to fit the newly sized pegs. Then we had to re-line up the holes and made sure they were the right size, we did all this in one class period. The final look did not came out the way we had planned it to look like because it had multiple useless holes, those wholes were there because of the other attempts we did. It was very difficult to portray a house since we did not not had the right materials and we also did not had enough time. This is what we attended to build, an suspended house with pegs.

 



Simple compound machine

For the Compound Machine project we combined two of our simple machines. We tied the rope of our Pulley to the end of the wheel and axel so every time we rotated the wheel and axel it would reel in the rope which would make the Pulley function as it's supposed to. Our creation did not get enough mechanical advantage so therefore it did not do very well. It was also different from other because it was the only one that use two machines while others used almost all of them, along making our machine there was some problems such as making others machines contribute and also finding where would be the best place to place or set our machines so we can get a good enough IMA but it failed. First we could figure it out how to make others machines contribute and second we did actually find away to make our machine give a little IMA but it wasn't good enough compare to others. 

The most difficult part was trying to figure out what two machines are good for each other meaning which are going to give us the best IMA. 

Simple Machines Blog

 We built simple machines to a specified mechanical advantage and then calculated % efficiency.
We built 4 simple machines; Incline plane, wheel and axel, pulley, and lever. We built each of this machines because we learned how to find the IMA of this machines and each of this machines had an IMA of 6, besides the pullye it had an IMA of 2

This is the Pulley and it picks heavy loads.
Design and Built by Sean C. and Morris U.  

This is the Lever. This Machine helps to elevate loads using other heavy load on the other side
Design and built by Morris U. and Armando A.   

 

This is the Incline plane. It helps to push or pull loads up stairs.
design and built by Armando A. 

This is the Wheel and Axel and it also helps to pick up heavy loads.
Design and build by Armando A. and Anthony.

In this project we came in different places with each machine. For the Pulley we cam in last, for the incline plane we came in first place, for the Lever we were disqualified because we forgot to mark where to place the box of nails and finally for the wheel and axel we were also last. Over all the winner of the project were Amy, Mike, Nick P. and Steven. It was very difficult to pick a winner because we needed to find percent efficiency and percent error so it was a tough process to go through. 

When we didn't get 100% efficiency we went back to our design and measure the dimensions and fix them or start al over again if we had the time to. 

six simple machines

• screw
• polly
• lever
• wheel and axel
• wedge
• incline plane

We can reduce this simplae machines to four because some of them are not thatmusch importatnt in construction or any other building. Two of this machines are not important for regular use.

Six flags trip

Sixflags is one of the most educational theme parks. Its educational because if you look into how the roller coastrs work, you are learning about phjysics and gravity. also how each roller coaester has their own mechanism which makes it better than others.

Physics of roller coasters
http://science.discovery.com/video-topics/engineering-construction/machines-rollercoaster.htm#/machines-rollercoaster.htm

Kingda ka- Mechanics
http://www.youtube.com/watch?v=M86ZEoM8CwM&edufilter=UCHz6YlvsfA_cFLx1sbx_6VA