LEVERS

CHARLIE HAFFEY

NORWOOD ELEMENTARY SCIENCE

WHAT ARE LEVERS?

A board or a bar

Little flexibility

Pivots

On a fulcrum

LEVER TYPES

1st Class

2nd Class

3rd Class

1ST CLASS LEVER

ELE

L

Load and Effort move in opposite directions.

1ST CLASS LEVER

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BEST 1ST CLASS LEVER

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&docid=t0SsEsWKRdKaDM&tbnid=cS5H8Yn5hOc6wM:&ved=&url=http%3A%2F%2Fwww.freerepublic.com%2Ffocus%2Ff-news%2F1031027%2Fposts&ei=mvaGUfOXG6aO0QHlw4GgAg&bvm=bv.45960087,d.dmQ&psig=AFQjCNEjf_ySFitf505UK4xJTIIQsEjvWQ&ust=1367885844395812

2ND CLASS LEVER

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2ND CLASS LEVER

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http://www.baileybio.com/plogger/thumbs/lrg-232-2nd_class_lever.jpg

BEST 2ND CLASS LEVER

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&docid=7XLUwIVxWqrnaM&tbnid=_HgDgin1ORnuFM:&ved=&url=http%3A%2F%2Fwww.humorimagez.com%2Fapps%2Fphotos%2Fphoto%3Fphotoid%3D133019428&ei=4AGHUbGxD-Xm0QGlnoHgDw&bvm=bv.45960087,d.dmQ&psig=AFQjCNF-Rd0rmIgB2w_rKfmTXjGmeW39jQ&ust=1367888725672992

3RD CLASS LEVER

E L

3RD CLASS LEVER

http://theundercoverrecruiter.com/wp-content/uploads/job-search-catapult.jpg

http://www.14-19nw.org.uk/pluginfile.php/20519/mod_page/content/4/tweezers.jpg

http://www.humankinetics.com/AcuCustom/Sitename/DAM/086/19art_Main.png

BEST 3RD CLASS LEVER

http://www.ginkandgasoline.com/wp-content/uploads/2012/10/fly-fishing-fly-casting.jpg

MECHANICAL DISADVANTAGE

E > L

Trading Force For Distance

LEVERS

CHARLIE HAFFEY

NORWOOD ELEMENTARY SCIENCE