work and power

power, work done and ...yeah... that it...

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  • Created by: sarrogin
  • Created on: 18-03-12 14:17

work

(http://3.bp.blogspot.com/-lDeXmYndnpA/TeUdSFkYuBI/AAAAAAAAA4I/vzeZGyC-3Kw/s1600/musicians-work-hard.png)

WORK DONE FORCE X DISTANCE

A 5 NEWTON FORCE ALONG 10 m  = 50J

if the work is done on a slope IT IS STILL THE SAME!!

A FORCE A 90degrees TO THE DIRECTION OF MOTION DOES NO WORK!

WORK DONE AT AN ANGLE IS = FORCE X COSq  X DISTANCE

DONT FORGET ITS MEASURED IN JOULES=

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power

(http://www.clker.com/cliparts/4/4/1/a/1195429270821624493molumen_multicolor_power_buttons_4.svg.med.png)

power is the RATE OF WORK

(http://www.komplexify.com/math/images/salarytheorem/PowerIsWorkOverTime.gif)

Also...

POWER = FORCE X VELOCITY

 

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efficiency

Efficency is the amount of usful output you get compared to imput.  It is a percentage.

(http://www.ustpower.com/Images/Efficiency%20Equation.jpg)

(http://empirebuilding.net/wp-content/uploads/2010/06/thumbs-up.jpg)

 

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