A brief history of Eggs vs Golf Balls - life long rivals
Prior to the invention of golf-balls eggs were used in the playing of golf. Golf was played in secret due to the embarrassment of how long it would take to complete 18 rounds and how many eggs it would take to finish the game. Entire villages were devoted to egg production in order to keep up with demand and the secret society of golfing. Eggs felt special. They were needed, loved, and for a brief moment served a purpose before they were splattered over the highlands of Scotland.
The MacDonald boys playing golf by 18th-century portrait painter Jeremiah Davison
After 52 years of hidden golfing a town in the south of France (Villeneuve) was discovered to have a large supply of golfballs but not enough eggs. Golf ball production was at an all time high thanks to a skinny hunter with a strange dietary requirement.
The high society of golfers (HSOG) made the unanimous decision to trade with the villagers of Villeneuve in order to avoid taxation issues arising in the global egg market. While highly illegal it continued in secret for another 73 years.
The high society of golfers (HSOG) made the unanimous decision to trade with the villagers of Villeneuve in order to avoid taxation issues arising in the global egg market. While highly illegal it continued in secret for another 73 years.
Prior to eggs Gaston only ever ate 12 dozen golf-balls a day and was not the size of a barge until switching to eggs
Egg vs Golf-Ball History Continued:
Eggs were upset. They were becoming the butt of all the yolks. The red-shirted hunter was getting larger but they missed being involved in sports.
Thus began the rivalry.
The golf-balls were happy to serve a purpose that didn't involve the digestive system.
Eggs were upset. They were becoming the butt of all the yolks. The red-shirted hunter was getting larger but they missed being involved in sports.
Thus began the rivalry.
The golf-balls were happy to serve a purpose that didn't involve the digestive system.
Time to take action:
Eggs retreated to the safety of their castles. The red-shirted hunter was eating them at an alarming rate and they knew that if it continued there was a risk of high Cholesterol (which is a gosh darn myth!). If this misguided theory had been caught early on it may have changed the course of history as we know it.
Golf Balls knew it was a lie but the eggs were unwilling to change or try to understand the logic or science behind it due to the influx of weekend keyboard warriors in the area. They were stubborn and known to have thick skin (outer shells) that reflected most sunlight as well as the perilous journey and exit from the Cloaca.
Eggs retreated to the safety of their castles. The red-shirted hunter was eating them at an alarming rate and they knew that if it continued there was a risk of high Cholesterol (which is a gosh darn myth!). If this misguided theory had been caught early on it may have changed the course of history as we know it.
Golf Balls knew it was a lie but the eggs were unwilling to change or try to understand the logic or science behind it due to the influx of weekend keyboard warriors in the area. They were stubborn and known to have thick skin (outer shells) that reflected most sunlight as well as the perilous journey and exit from the Cloaca.
Since golfers were best know for swinging their arms in order to drive golf balls (previously eggs) towards their target the choice was made to use a Trebuchet as the transportation and attack method of Golf Balls vs the Cowardly Eggs Hiding In Their Castles (totally unbiased sentence here).
You have now been given the important job of constructing a medieval style siege machine to destroy the unblocked eggs.
You have now been given the important job of constructing a medieval style siege machine to destroy the unblocked eggs.
Trebuchets - Design and Building
Learning Outcomes/Curricular Competencies:
-Choose a design opportunity -screen ideas against criteria and constraints -Critically analyze and prioritize competing factors, including social, ethical, and sustainability considerations, to meet community needs for preferred futures -Identify and use sources of inspiration and information -Conduct the test, collect and compile data, evaluate data, and decide on changes -Identify and use appropriate tools, technologies, materials, and processes for production -Make a step-by-step plan for production and carry it out, making changes as needed -Use materials in ways that minimize waste -Critically reflect on their design thinking and processes, and evaluate their ability to work effectively both as individuals and collaboratively in a group, including their ability to share and maintain an efficient co-operative work space -Choose, adapt, and if necessary learn about appropriate tools and technologies to use for tasks |
06._design_process_trebuchet.pdf | |
File Size: | 59 kb |
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trebuchets_handout_holbrook.pdf | |
File Size: | 48 kb |
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Questions and Research
1. At the time what made Trebuchets the best siege machines?
2. What were the downsides of a trebuchet when needing to attack an enemy that required travel?
3. Why do we not use trebuchets today (other than for fun)?
4. What ethical considerations do we need to keep in mind when designing and building our projects?
1. At the time what made Trebuchets the best siege machines?
2. What were the downsides of a trebuchet when needing to attack an enemy that required travel?
3. Why do we not use trebuchets today (other than for fun)?
4. What ethical considerations do we need to keep in mind when designing and building our projects?
Challenge
-Your challenge is to build a trebuchet that can accurately aim into the 6"x8" Bailey/doorway of your castle and destroy the not so innocent Royalty (eggs) that have not been EggBlocked as well as potentially decimate the cardboard castle!
You will need to research the physics and math needed to build a trebuchet that is accurate and safe to use.
Design Requirements
-Full size drawn plans required of at least the side view
-Math to determine the length of throwing arm, sling/pouch length
-release pin angle and length
-math to determine approximately (or accurately) how far it will throw your objects. You must have this before you are allowed to throw anything!
-Need a triggering mechanism or safety hook!
-Axle must be 12"/30cm from the ground. No more no less!
-"footprint" of trebuchet can be a maximum of 24"x18"
-Everyone will have the same size counterweight (or pretty close in size)
-pouch/sling MUST be able to hold the golf ball and shoot it safely
-Trebuchet to castle distance will be 20 feet minimum but you can design it to shoot farther
Materials given
-10" of 3/8 steel rod for axle (which must be 12"/30cm from the ground
-3/4" square pine strips for frame
-runway material
-cement and wire to create counterweight
-fasteners (eye hooks, etc)
-paint to make it look fabulous
-string (you may bring in your own materials if you don't like ours) for the sling
Materials not given
Material for a pouch
Extra golf balls (you will get one and only one!)
How you are being Marked
-Marking will be based on research, design, build quality, and accuracy of your trebuchet. Please refer to the detailed marking rubric handout in class
-Your challenge is to build a trebuchet that can accurately aim into the 6"x8" Bailey/doorway of your castle and destroy the not so innocent Royalty (eggs) that have not been EggBlocked as well as potentially decimate the cardboard castle!
You will need to research the physics and math needed to build a trebuchet that is accurate and safe to use.
Design Requirements
-Full size drawn plans required of at least the side view
-Math to determine the length of throwing arm, sling/pouch length
-release pin angle and length
-math to determine approximately (or accurately) how far it will throw your objects. You must have this before you are allowed to throw anything!
-Need a triggering mechanism or safety hook!
-Axle must be 12"/30cm from the ground. No more no less!
-"footprint" of trebuchet can be a maximum of 24"x18"
-Everyone will have the same size counterweight (or pretty close in size)
-pouch/sling MUST be able to hold the golf ball and shoot it safely
-Trebuchet to castle distance will be 20 feet minimum but you can design it to shoot farther
Materials given
-10" of 3/8 steel rod for axle (which must be 12"/30cm from the ground
-3/4" square pine strips for frame
-runway material
-cement and wire to create counterweight
-fasteners (eye hooks, etc)
-paint to make it look fabulous
-string (you may bring in your own materials if you don't like ours) for the sling
Materials not given
Material for a pouch
Extra golf balls (you will get one and only one!)
How you are being Marked
-Marking will be based on research, design, build quality, and accuracy of your trebuchet. Please refer to the detailed marking rubric handout in class
Basic Design Help
Things to consider:
-side framework
-Trebuchet Base
-Runway length/style
-Trebuchet Arm. How long will it be? Where will the fulcrum/axle be located? Details of the release pin
-side framework
-Trebuchet Base
-Runway length/style
-Trebuchet Arm. How long will it be? Where will the fulcrum/axle be located? Details of the release pin
VIRTUAL TREBUCHET . COM (click for calculation help!)
If you want to do hand calculations to design a trebuchet with the best range, you will need to understand the physics involved. The picture below, shows a diagram of a trebuchet with the main parts labeled. The trebuchet relies on the principle that stored potential energy of the counterweight can be converted into kinetic energy of the payload, launching it into the air.
Mr. Holbrook found some stuff and filmed it!
9/10 Doctors wish you didn't know these simple tricks!
How do make the cement counterweight?
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Overview of an old Trebuchet frame. Good or Bad? You be the judge!
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Think about weight ratios and the release pin angle!
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Want a heavier weight? Maybe this one is too heavy for you...
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Why might you add wheels to your trebuchet? SCIENCE!
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Custom shapes for your weights!
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Trebuchets yay!
CLICK HERE TO GO TO THE NEXT PAGE ABOUT TREBUCHETS!
Some vocabulary used in this unit:
-Levers (1, 2, 3 class levers) - Trebuchets use a combination of 2nd and 3rd class levers
-Simple machines
-Fulcrums
-Levers (1, 2, 3 class levers) - Trebuchets use a combination of 2nd and 3rd class levers
-Simple machines
-Fulcrums