A lever, the leg acts as the lever and the ball acts as the load.
A pulley isn't a kind of simple machine, it is a simple machine
A train is not a simple machine.
IT's NOT A SIMPLE MACHINE!
its not a simple machine
It is a simple lever.
Rope is not a simple machine on its own, it's a simple machine on a wheel and axle, then it's a pulley.
What kind of simple machine is a garage door
a compound machine is a combination of simple machines
It is a wheel. The ball rolls across the surface, instead of scraping across as a pencil or nib pen would.
lever
lever