Force and Simple Machines by Dena Thomas

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Slide Notes

Force and Simple Machines

Published on Nov 18, 2015

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PRESENTATION OUTLINE

Force and Simple Machines

Photo by pedrosimoes7

WHAT IS Force?

a push or a pull

Photo by patrickjourdheuille

Mass

more mass=more force needed to move an object

Photo by Markus Spiske

FRICTION
smooth surface=less friction
rough surface=more friction

http://looneytunes.wikia.com/wiki/File:Bedeviled_Rabbit

Photo by ER's Eyes On a Break. I'll be back in January. Bes

Balanced Forces

same force in opposite directions= no change in motion

Photo by m01229

Unbalanced Forces

motion of the object will change

Photo by Hjem

Law of Gravity

all objects are pulled toward one another by gravity

http://looneytunes.wikia.com/wiki/File:Bedeviled_Rabbit

Photo by Jeff Pioquinto, SJ

Magnetism

magnets pull on metal objects containing iron

Photo by sarnil

Work

when a force moves an object

Photo by Jérémy Stenuit

Simple Machines

make work easier

Photo by el cajon yacht club

Which Simple Machine is shown here?

Photo by chrisdebruyn

Dena Thomas