levers

The lever is a movable bar that pivots on a fulcrum attached to a fixed point. The lever works by applying
forces at different distances from the fulcrum, or a pivot. For your arm, leg or any part of the body to move
muscles and bones must work together like a series of levers.

Production of rotation on the levers

For rotation to occur, an eccentric force must be applied. Class 1 lever built for balance, Class 2 lever to save effort, and Class 3 lever for speed and range of motion.

primera generacion

The fulcrum is between power and resistance, achieving that the applied power can be much less than the resistance to overcome, that is, it maximizes power. However, the transmitted speed and the distance traveled by the body are sacrificed EXAMPLES: * Scissors * Pliers * Balance

1st generation lever on the body

second generation

The resistance is between the power and the fulcrum, so the power will always be less than the resistance, even if it does not achieve greater displacement or distance traveled (but saving energy is extremely useful).
EXAMPLES:
*wheelbarrow
* lemon squeezer
*nutcracker

2nd generation lever on the body

third generation

The power exerted is between the fulcrum, at one extreme, and the resistance, at the other. The applied force is greater than the resulting one, but it is possible to increase the transmitted speed or the distance traveled by the body.
EXAMPLES:
*Rod
*tweezers
*stapler

3rd generation lever on the body