All machines have three components

In this tipe of motion the object moves forwards and backwards in a straight line

Is a rigid bar that can pivot on a point of support called a fulcrum

What type of lever is a scissor?

Are use to lift heavy loads

Is a mechanisms consisting of two wheels with teeth

Depending on the form of the teeth, the gears that transmite motion between perpendicular sahfts are

An elliptical component that rotates to drive an element called a follower

The movement in a .... is generales in the pedales and transmite to the back wheel