people play with them,also they can launch airplanes.
See the related link for pictures of catapults and explanations.
we can harvest grain faster now that we had used this machine
A windmill was used in the old days to help grind grain into flour. Today it is used to change wind or kinetic energy into electrical energy and place it out on the Electrical Grid for people to use.
Plasma Cutting is process by which all types of conducting materials can be cut. This is an economic commonly used process for steel cutting in the industry today.
Steel wire is commonly known as wire rope. Several layers of metal wire are twisted to form a rope. Steel is the main material used in wire rope today. The product was developed in the 1830's and was primarily used in mining when applications that could lift and hoist weights in elevators were essential.
Catapults are used to today for fun contests like "pumpkin chunking" which includes the tossing of a pumpkin via catapult. Catapults are also used on aircraft carriers to launch planes.
Hand held catapults are certainly used today. A good example would be by a carp angler.
In rural America here, we use them to throw pumpkins!
Catapults are used by anglers when coarse fishing to 'catapult' their bait to the area of river or lake they are trying to catch a fish. Catapults are used to propel aircraft into the air from aircraft carrier ship decks Catapults are used for dropping bombs from boats on submarines, to propel aircrafts into the air from aircraft carriers, and for fun. Kids like to hurl water balloons at each other using catapults.
No modern military force still employs catapults as a combat arm. Today's catapults are largely built by hobbyists and re-enactors, as well as historical modelers, and are generally used for recreational activity.
The Catapults were used by the medieval Greeks and Romans.
Catapults were not used in WW2
The catapults have been used in many wars
Some catapults were used in the middle ages to try and get into Medieval Castles. The Romans had catapults. I had a hand catapult when I was a youngster.
they used these catapults for war and destruction!
People don't need catapults when they have guns.
There are many ways a catapult has affected society. most of our modern day war machines even guns could be considered as catapults. catapults are still used today on aircraft carriers to lurnch jets. Many old cranes could have even been designed from catapults.