Simple machines that are widely used include the wheel and axle, pulley, inclined plane, screw, wedge and lever. While simple machines may magnify or reduce the forces that can be applied to them, they do not change the total amount of work needed to perform the overall task.
Mar 19, 2019
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There are six known simple machines: the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. They are the elementary building ...