Charlie HaffeyNorwood Public Schools

Object moved

LOAD (L)

Force moves Load

EFFORT (E)

Background

A Simple Machine

A board or bar

Moves on a hinge

What is the name of the hinge?

Lever

FULCRUM

Fulcrum in middle

Give two examples

First Class Lever

L E

Where do you place the fulcrum?

To Make LOAD Feel Lighter

L E

Fulcrum closer to Load

Load feels lighter

http://etc.usf.edu/clipart/36300/36335/crowbar_36335_lg.gif

http://www.cleverandeasy.com/images/stories/ride-on-carry-on-travel-stroller-1.jpg

http://c.photoshelter.com/img-get/I0000Z0NLkaW5RXw/s/750/600/Claw-Hammer-Nail.jpg

http://www4.pictures.zimbio.com/gi/FISA+World+Rowing+U23+Championships+Day+Two+4mWw3_c7YrFl.jpg

Microsoft Office ClipArt

Charlie HaffeyNorwood Public Schools