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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. It is one of the six simple machines identified by Renaissance scientists. .... This allows the identification of three classes of levers by the relative ...

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  ...

www2.phy.ilstu.edu/pte/489.01content/simple_machines/simple_machines.html

Resource Information for Teaching Simple Machines: Background ... First-class levers have the fulcrum located between the load and the effort (LFE). If the two ...

www.ee.nmt.edu/~tubesing/missionpossible/simplemachines.pdf

An example of how an Inclined Plane can be used to raise a mass to activate another simple machine. Inclined Plane. First Class Lever. Force pushing (or ...

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

Levers - a type of simple machine. ... Many of our basic tools use levers, including scissors (2 class 1 levers), pliers (2 class 1 levers), hammer claws (a single ...

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

Jul 26, 2016 ... Explanation about the Three Lever Classes. ... Books. Top-rated books on Simple Machines ... www.school-for-champions.com/machines/

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

Jul 26, 2016 ... A lever is a simple machine that allows you to gain a mechanical ... Class 1. A class 1 lever has the fulcrum placed between the effort and load.