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() SIMPLE MACHINES, , , , Pulley, , Just as people got tired of moving doors, they got tired of pulling water out, of a well. So, a rope was passed over a freely-moving wheel fixed over the well, and this simple machine made the work easy. A pulley is a simple machine, made of a rope and a wheel., , Pulleys are useful for moving objects in hard-to-reach places and where the, force has to be applied in a different direction. In a pulley an effort can be, applied in one direction and a load can be moved in another direction. Pulley, is used to do twice as much work with the same effort., , Here are some common examples of pulley:, , , , Shoelaces are also a kind of pulley because the force, of direction changes when you pull onto them., , Inclined plane, , Roads and paths are cut in steep mountains, to make travelling less difficult. An inclined, plane is a simple machine with a flat, surface with one end higher than the other., , Heavy objects can be moved more easily, oe) a lower to a higher level with it. Less, orce Is needed to move objects using an, , inclined plane as it increases the distance to, be travelled.