Linear transmission mechanisms

LINEAR TRANSMISSION MECHANISMS:use linear motion input to produce linear motion output. We typically use these mechanisms to transmit force.

- A LEVER is a rigid bar that turns around a point called a fulcrum.When the forces acting on opposite ends of a lever are equal, we say the lever is in equilibrium.

F x d= R x r

- CLASSES OF LEVERS: The locations of the fulcrum, force and resistance divide levers into 3 classes.

• CLASS 3: Levers increase the distance that the end of the lever moves.
• CLASS 2: Levers increase the force that we apply.
• CLASS 1: Levers can do both of those things.

CLASS 3:

CLASS 2:

CLASS 3: