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Free bodydiagrams

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Information about Free bodydiagrams
Education

Published on December 7, 2013

Author: AngelaStott

Source: slideshare.net

Description

Slides for teaching the basic principles of drawing free body diagrams in mechanics problems.
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Force Free Body Diagrams

Force

Force is

push Force is

push Force is pull

push Force is pull

push Force is has pull

push Force is has magnitude pull

push Force is has magnitude direction pull

represented by Force has magnitude direction Vector

represented by Force has magnitude direction

represented by Force has magnitude direction

represented by Force has magnitude direction Vector

push Force is pull

push Force is between pull

push Force is between pull 2 interacting bodies

Body acting ON a Forces

Body acting ON a Forces

free body diagram are represented in a Body acting ON a Forces

free body diagram are represented in a Body acting ON a Forces as a

free body diagram are represented in a Body as a acting ON a as Forces

free body diagram are represented in a Body as a acting ON a as Forces Type; Exerted by

Weight by Earth

Weight

Normal by table Weight

Normal Weight

Normal Weight

Friction by table Push by hand

Normal Friction by table Push by hand Weight

Push ON table Friction ON table Push ON hand Pull ON Earth

free body diagram are represented in a Body as a acting ON a as Forces Type; Exerted by

free body diagram are represented in a Body as a acting ON a as Forces Type; Exerted by

magnitude direction in Acceleration caused by Force is change of velocity

magnitude direction in Acceleration caused by Resultant Force is change of velocity

magnitude direction in Acceleration causes Resultant Force is change of velocity

Normal Friction by table Push by hand Weight

Normal Friction by table Push by hand Weight

Normal Resultant Weight

acceleration Normal Resultant Weight

Questions Draw free body diagrams for: a) a car driving on a horizontal plane at a constant velocity b) a car free-wheeling to a stop on a horizontal plane c) a skydiver before his parachute opens d) a skydiver just after his parachute opens.

a) constant velocity car

Normal Weight

Normal Friction by road Weight Push by engine

Car moves at constant velocity Normal Friction by road Weight Push by engine

b) Slowing car

Normal Weight

Car slows

Car slows acceleration

Normal Friction by road Weight

Car slows Normal Friction by road Weight

Car slows Normal Resultant Weight

Car slows Normal acceleration Resultant Weight

c) skydiver accelerating down

Skydiver moves faster & faster

Skydiver moves faster & faster acceleration

Resultant Skydiver moves faster & faster acceleration

acceleration Weight Skydiver moves faster & faster Air resistance

acceleration Weight Skydiver moves faster & faster Air resistance

acceleration Weight Skydiver moves faster & faster Air resistance

Air resistance Weight

d) parachute slows skydiver

Skydiver slows

Skydiver slows acceleration

acceleration Skydiver slows Resultant

Air resistance Skydiver slows acceleration Weight

Air resistance Weight

Resultant

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