it can fix some thins,materials
it is called as simlple machines because it easy, simple,good handling, so it will do the work easier and complete the work easier...
They are called simple machines.
When simple machines work together, that forms a compound machine.
compound machine
A compound machine.
Bicycle
Simple machines
A CATAPULT IS A LEVER!!!
Complex machines are made out of multiple simple machines like axels, levers and pulleys make up a catapult on wheels.
6 simple machines.
its a compound machine(:
compound machine