The malleus, incus, and stapes are small bones in the middle ear, connected as compound levers, that transfer sound waves from the eardrum to the oval window of the cochlea.

lever, simple machine used to amplify physical force. All early people used the lever in some form, for moving heavy stones or as digging sticks for land cultivation.

Levers work by reducing the amount of force required to move an object or lift a load. The lowered amount of effort needed is compensated through increased distance over which the force has to be …

Jul 23, 2025 · In this article, we will learn in detail about types of levers along with their example. We will also learn what is lever and how they are classified using mechanical advantage.

Mar 9, 2022 · Greek mathematician Archimedes was the first to develop lever principles in 260 B.C. A lever system consists of four parts – beam, fulcrum, load, and effort. Beam: A plank made out of …

Dec 8, 2025 · Hi, and welcome to this video on levers! We’re going to discuss what exactly levers are, the physics behind how they work, and what different types of levers exist.

Simple machines like levers are devices that make tasks—typically, moving some target object—easier by redirecting or amplifying an input force into a new output force.

LEVER definition: a rigid bar that pivots about one point and that is used to move an object at a second point by a force applied at a third. See examples of lever used in a sentence.

Levers are all around us and are used in countless tools and machines. Here are some more examples of each type of lever and how they are used in everyday life.

A lever is a type of simple machine, which creates a mechanical advantage to perform tasks by changing the magnitude and/or direction of forces. A lever needs a fulcrum (see figure 1), which is …