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en.wikipedia.org/wiki/Lever

A lever is a machine consisting of a beam or rigid rod pivoted at a fixed hinge, or fulcrum. A lever is a rigid body capable of rotating on a point on itself. On the basis of the location of fulcrum, load and effort, the lever is divided into three types. .... The lever operates by applying forces at different distances from the fulcrum, or a ...

www.school-for-champions.com/machines/levers_classess.htm

Jul 26, 2016 ... There are three types or classes of levers, according to where the load and effort are located with respect to the fulcrum. Since humans usually ...

www.ask.com/youtube?q=Different+Types+of+Levers&v=DXtr9-S3lxw
Mar 19, 2013 ... Check out us at:http://www.tutorvista.com/content/physics/physics-i/power-energy -machines/levers.php Three Classes of Levers The basic ...

www.enchantedlearning.com/physics/machines/Levers.shtml

Many of our basic tools use levers, including scissors (2 class 1 levers), pliers (2 class 1 levers), hammer claws (a single class 2 lever), nut crackers (2 class 2 ...

quatr.us/physics/machines/lever2.htm

May 2016 - All levers fall into one of three types of lever. A first-class lever is a stick where the fulcrum is between the weight and the energy moving the weight  ...

sciencing.com/ten-different-types-levers-7285923.html

Apr 24, 2017 ... Levers consist of an inflexible pole (bar) that pivots on a fulcrum. Levers come in three classes---first, second and third class---each requiring an ...

study.com/academy/lesson/levers-definition-classes-examples.html

A lever is one of the most common tools we use to help us lift things beyond ... Learn about the components of a lever, find out about three different lever classes, ...

www.technologystudent.com/forcmom/lever1.htm

PDF FILE - CLICK HERE FOR PRINTABLE WORKSHEET BASED ON EXERCISE BELOW. Levers are used to lift heavy weights with the least amount of effort.

www.humankinetics.com/excerpts/excerpts/levers-work-to-create-movement-in-the-human-body

Levers are typically labeled as first class, second class, or third class. All three types are found in the body, but most levers in the human body are third class.