Charlie Haffey
Norwood Public Schools
Background

Object moved

LOAD (L)

Force moves Load

EFFORT (E)
Lever

A Simple Machine

A board or bar

Moves on a hinge

What is the name of the hinge?
FULCRUM
First Class Lever
L

Fulcrum in middle

Give two examples
E
To Make LOAD Feel Lighter
L
E
Where do you place the fulcrum?
Fulcrum closer to Load
Load feels lighter
http://etc.usf.edu/clipart/3
6300/36335/crowbar_36335
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http://www.cle
verandeasy.com
/images/stories
/ride-on-carryon-travelstroller-1.jpg
http://c.photoshelter.c
om/imgget/I0000Z0NLkaW5R
Xw/s/750/600/ClawHammer-Nail.jpg
Microsoft Office ClipArt
http://www4.pictures.zimbio.co
m/gi/FISA+World+Rowing+U2
3+Championships+Day+Two+4
mWw3_c7YrFl.jpg
Charlie Haffey
Norwood Public Schools