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Screw – Simple machines – Physics

By |2018-05-31T11:49:15+00:00August 17th, 2017|Physics, What|

A cider press with big wooden screws People always count screws as a separate kind of simple machine. But really screws are just one kind of inclined plane. They are such an important kind that we give them their own category. Like most other simple machines, screws also exist in nature. The hip joints of [...]

Simple machines – Physics

By |2018-05-31T11:49:24+00:00August 17th, 2017|Physics|

An example of a screw, a wedge, a wheel and axle, and a lever Machines are ways to make it easier to do work. Many plants and animals have evolved natural machines like arm muscles (a kind of lever) or teeth (a kind of wedge) or a bacteria's flagellum (a kind of screw). Many animals also make machines out of [...]

Inclined plane – Simple machines – Physics

By |2018-06-11T22:26:46+00:00August 16th, 2017|Physics|

An inclined plane: Earth ramp to the fortress at Masada (Thanks to www.HolyLandPhotos.org) What is an inclined plane? An inclined plane is any slope or ramp, like a wheelchair ramp or a slide. The ramp makes it easier to lift something heavy, like a rock. (Find out more about work) Instead of lifting the rock [...]