EXAMPLE: If you have a log that weighs 100 lbs. And you need to lift it two feet, using a 2:1 ratio system, the formula is:
(3) The frictionless pulley does not alter the product of force and distance. There is another limitation on the definition of work. Only the force in the direction of motion counts. What does this mean? The angle on which you direct the pull of your system will determine the actual advantage that it will receive. REFER TO NATURAL AND ARTIFICIAL ANCHORS
TRANSITION: Are there any questions over the basic theory? Let's now discuss the construction of various ratio systems.
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