What do you get when you combine ignorance and money ?
" Give me a lever long enough and a fulcrum on which to place it, and I shall move the world. "
—Archimedes—
A lever is a simple machine consisting of a beam or rigid rod pivoted at a fixed hinge or fulcrum.
Simple machine that essentially consists of a bar that rests or can rotate on a point (fulcrum) and is designed to overcome a force (resistance) by applying another force (power).
It is one of the six simple machines identified by Renaissance scientists, along with the wheel and axle, force multipliers, inclined plane, pulley, screw and wedge.
A lever can be used to maximize the mechanical force applied to an object, increase its speed or the distance it travels, through the application of a proportionally smaller amount of force.
Depending on the proximity or distance of the fulcrum from the body to be moved, more or less applied force will be required and a greater or lesser effect will be achieved.
There are three types of lever, depending on the relative position of the resistance point, the power point and the fulcrum. Each one has different characteristics and will have a relatively different effect.
First degree lever: 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.
Second degree lever: 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).
Third degree lever: 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 extend the transmitted speed or the distance traveled by the body.
—Warren Buffett—



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