Lever - Wikipedia, the free encyclopedia
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In physics, a lever (from French lever , "to raise", c.f. a levant ) is a rigid object that is used with an appropriate fulcrum or pivot point to multiply the mechanical force that can be applie...
en.wikipedia.org/wiki/Lever
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Second Class Lever and Third Class Lever ... An example of a Second Class Lever is a can opener. The difference from the first class lever is that the fulcrum is on the end, instead of in the middle. ... An example the Third Class Lever is a fishing rod. The load is the fish; the handle end is the fulcrum.
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library.thinkquest.org/J002079F/lever.htm
library.thinkquest.org/J002079F/lever.htm
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The picture displayed shows a lever. The lever is a simple machine made with a bar free to move about a fixed point called a fulcrum. The lever consists of three parts. The fulcrum (see smiling triangle), load (see smiling box) and a rod (see brown plank).
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www.tooter4kids.com/Simple_Machines/lever.htm
www.tooter4kids.com/Simple_Machines/lever.htm
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The Lever; In its simplest form, a lever is a stick that is free to pivot or move back and forth at a certain point. Levers are probably the most common simple machine because just about anything that has a handle on it has a lever attached.
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teacher.scholastic.com/dirtrep/simple/lever.htm
teacher.scholastic.com/dirtrep/simple/lever.htm
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A hands-on experiment with levers lead by science expert Steve Tomecek ... The "fulcrum" is the point on which the lever turns or balances. In the case of a fork, the fulcrum is the fingers of your hand. Scissors are really two levers put together. The handle on the toilet flusher is commonly called a fixed lever.
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teacher.scholastic.com/dirt/lever/whatlevr.htm
teacher.scholastic.com/dirt/lever/whatlevr.htm
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What is a simple machine ... by Todd Kranz, a graduate student at the University of Houston ... Purpose: The purpose of this web site is to teach elementary students about the six simple machines. Each of the machine pages below contain information and activities for the students to use. Teachers may use the links at the...
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www.coe.uh.edu/archive/science/science_lessons/sciencel...
www.coe.uh.edu/archive/science/science_lessons/scienceles1/finalhome.htm
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There are SIX simple machines: ... 2. Lever - Enchanted Learning animations ... A lever is a stiff bar that rests on a support called a fulcrum which lifts or moves loads.
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www.mikids.com/Smachines.htm
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Lever; A lever is a stiff rod that rotates around a pivot point. Downward motion at one end results in upward motion at the other end. Depending on where the pivot point is located, a lever can multiply either the force applied or the distance over which the force is applied.
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www.mos.org/sln/Leonardo/InventorsToolbox.html
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