A lever
Lever -- load, fulcrum, force
inclined plane
To find the mechanical advantage of a simple machine divide output force by input force. (input force is the force that we exert on a machine, and output force is the force that is exerted by a machine).
A toothbrush is not a simple machine, it does not work on the principle of levers, effort, and load. It's not a machine at all in mathematical terms. A "machine" is that which performs "work", i.e. transfers or converts energy. You arm moving the toothbrush is a machine by this definition, however.
A lever
A fulcrum.
Lever -- load, fulcrum, force
A Inclined Plane Can Help You Raise A Load Or A Pulley System.
It is called LOAD.
A wheel and axle....
inclined plane
a pulley is not a complex machine. it is a small wheel with a groove around it. a rope is passed over it to pull the load easily. so it is a simple machine
the law of the machine is an expression which gives the relationship between the load on a machine and the applied effort
the force on the load is the force exerted by the simple machine on the load. All simple machines involve a force on the load and an effort force.
A crane utilizes a combination of simple machines, but the primary one involved in lifting a load is the pulley. The pulley system allows the crane to lift heavy loads with relatively less effort by applying force over a distance.
An inclined plane is a simple machine that is used to load heavy objects!