Catapult Activity - Rubberband Power - Cubscout Eric Adventures
Channel: Scout Eric Adventures
Date: 20/08/2020

Checkout How to build this Catapult in my Virtual youth camp playlist.  I give you the parts list along with instructions.  

FUN and cheap activity idea for any group.   

In this video we explore the power of multiple rubberband,  How far can you launch a marshmellow. 

 FACTS

The catapult was invented around 400 BC in Greek town Syracus. The very first catapult invented resembled a crossbow. It was called the Gastraphete. The Greeks, impressed by the destructive power of this new weapon, created a bigger version called a Ballista and it was used as a defense weapon against raiding armies.

Catapults have been integral to siege warfare since antiquity. Though ancient Catapults were one of the most effective weapons in siege warfare. Various types of Catapults have been used by the Greeks, Romans, and Chinese. The first catapults were early attempts to increase the range and power of a crossbow. Diodorus Siculus, a Greek historian, was the first to document the use of a mechanical arrow firing catapult (early Ballista) in 399 BC. Catapults as we think of them were introduced to Europe during the Middle Ages. Catapults made their exhibition in England in 1216 during the Siege of Dover, the French crossed the Channel and were the first to use Catapults on English soil. With war prevalent throughout Europe during the Middle Ages the popularity of fortified castle and city wall rose significantly. This made Catapults an essential. Catapults were used to launch missiles (many different objects were utilized). These missiles were either launched directly at the wall to cause maximum damage to the fortifications or were launched over the wall to lay siege on the population within the protective walls. Catapults were also used to throw missiles at soldiers. The first accounted acts of Biological Warfare involved catapults. Bodies of the diseased were hurled over the city walls to infect the residing citizens. Catapults were used extensively throughout Europe (predominantly by the French) until 885-886 AD when new defense systems rendered catapults ineffective.

Our Catapult

The Mangonel is what many people think of when they think of a catapult. From the Latin word "manganon" meaning engine of war. The Mangonel was invented by the Romans in 400 BC. The Mangonel consists of a long wood arm with a bucket (early models used a sling) with a rope attached to the end. The arm is then pulled back (from natural 90o angle) then energy was stored in the tension of the rope and the arm. Then the bucket would be loaded. When released the Mangonel's arm would return to its equilibrium position, when it came in contact with the beam (or block) the arm would stop but the missiles stored in the bucket would continue to launch toward the enemy. The Mangonel fired projectiles in an overhead arc, the angle of the path of the projectile could be determined by a block placed on the beam that stopped the Mangonel's arm by using a block that stopped the arm earlier than 90o angle would result in a path angle (above the horizontal) equal to the the angle between the arm and the 90o angle. The Mangonel was capable of firing 1,300 ft. The Mangonel was easy to construct and wheels were added to the design to increase mobility. The Onager is a type of Mangonel, recieving it's name from Latin word "onagros" meaning wild ass, as the motion and power of the Onager mimicked the kick of the wild ass