Splitit,liftit,holditinplace.How?

wedge it

ByGlenPhelan

SimpleMachines

Explorer magazine’ssix-partseries

Beforeyouread

Simple Machines

Explorer magazine’s six‑part series

lever
inclined plane
wedge

This edition

screw
wheel and axle
pulley

HumanJourney

PhysicalScience

Beforeyoudothescienceactivityattheendofthisarticle,thinkabouthowyouwillrecordorgraphtheresults.