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12.2 Simple Machines

Definitions:
compound machine online quizzes , fulcrum, block and tackle, scissors, simple machine, hammer, third class lever, forearm, screw, first class lever online activities , lever family, inclined plane family, second class lever, arm, wheelbarrow, wedge create online tests ,

Answers:
this lever has the fulcrum in the middle, Ex: first class lever example, Ex: two inclined planes, back to back test , the rigid portion of a lever, which rotates around a fulcrum, the point around which the rigid arm rotates in a lever, a machine made of two or more simple machines, this family includes a ramp, wedge, and screw, Ex: an inclined plane wrapped around a rod, this lever has input force opposite the fulcrum, this family includes a hammer, pulley, wheel %26 axle, multiple pulleys combined in a single unit activity , this lever has output force opposite the fulcrum, Ex: a second class lever example, one of the six basic types, the basis for all other machines , Ex: compound machine composed of a wedge%26 2 levers, Ex: third class lever example,