Linear transmission of motion - Levers

A lever is a rigidbar that turns around a point called a fulcrum. Various forces may act on the lever at the same time.

Each force produces a specific torque, which is the force multiplied by its distance from the fulcrum.

                                               Torque = Force x Distance
                                                   
                                                           F x d = R x r
                                            
Classes of levers 
We can divide levers into classes according to the locations of the fulcrum, force and resistance.

Classification of mecanisms

 We can classify mechanisms by the work that they do and how the funtion.

What is a mechanism?

Althought these mechanisms are quite different, they all have something in common. The make work easier because they transmit and transformation force and motion.

All of  these mechanismb requiere an input force and motion from some type of source.

Mechanisms transmit motion and force to receptors that finally perform the work.

This is the output force and motion.