Модульные инструментальные системы линейки KM4X Kennametal 2017 - страница 130

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Technical Manual Frequently Asked Questions (7. Frequently Asked Questions — continued) What is Mechanical Advantage? In this example of a simple machine, work is the product of force and displacement. Work is described as the power needed to force an object to move a given linear distance. (1) W1 = F * h In this example, the linear distance is (h). Technical Manual m W = work h F = force m m = mass F h = height (2) W2 = f * l Using an inclined plane as our example, we take notice of the work required to move a linear distance (l). Due to the distance (l) being more than (h), less force is required to move the same mass. W = work f = force l e h m m = mass f h = height l = linear distance traveled to achieve height (3) W1 = W2 The work required to move the mass in example one equates to the force required to move the same mass in example 2. (4) F * h = f * l Substitute equations (1) and (2) into (3). (5) F = l f h (6) F = MA In this example, mechanical advantage is defined f as a multiplier used to relate two different forces. (7) MA = l That multiplier is governed by the ratio between h length and height (or simply the angle created between the two). (continued) C30 kennametal.com L V i KMT_KM4X_Catalog_C030_C031_EN.inddKMT 30 KM4X C l C030 C031 EN S b 1 2016 2 00 PM 9/1/16 2:03 PM