Levers are one of the most common simple machines on earth. When you think of a lever, you probably think of a handle or arm that is attached to and moves about a hinge – and you’d be right. But don’t sell these powerful machines short just because they are so simple!
A lever is a simple machine made up of a rigid body with three basic elements; a load, a pivot point (or fulcrum), and an applied effort. These simple machines make life easier for us by amplifying force, amplifying motion, and/or changing direction. A lever can be used alone or in series, depending on the amount and type of work that is needed. ...
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