lever
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
Rope is not a simple machine on its own, it's a simple machine on a wheel and axle, then it's a pulley.
It is a simple lever.
A wrecking ball is an example of a third-class lever. In this configuration, the effort is applied between the fulcrum and the load; the fulcrum is the point where the crane's arm pivots, the load is the weight of the wrecking ball, and the effort is the force exerted by the crane to swing the ball. This setup allows for a greater range of motion and the ability to exert force on structures being demolished.
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