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Machines change the magnitude and direction of a force - PowerPoint PPT Presentation


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Inclined plane - a slanted surface used to raise an object. Work is made easier because the effort force moves over a greater distance. Mechanical advantage is equal to the length of the plane divided by its height.Wedge - a moving inclined plane. Force is multiplied since it is applied to a wide area and exerted over a small area. The \"sharper\" the wedge, the greater the mechanical advantage. Screw - an inclined plane wrapped around a cylinder. Multiplies an effort force by acting thro30009

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