work and power how we get stuff done!!!. what is work? work: occurs when a force causes an object to...
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![Page 1: WORK AND POWER HOW WE GET STUFF DONE!!!. WHAT IS WORK? Work: occurs when a force causes an object to move in the direction of the force applied IF THE](https://reader036.vdocuments.us/reader036/viewer/2022062417/5516acbd550346f6208b50b1/html5/thumbnails/1.jpg)
WORK A
ND
POW
ER
HO
W W
E G
ET
ST
UF F D
ON
E! ! !
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WHAT IS WORK?Work: occurs when a force causes an object to move
in
the direction of the force applied
FORCE HEAVYBOX
IF THE FORCE MOVES TO THE EAST, THEN IN ORDER TO
BE WORK…THE BOX MUST MOVE EAST AS WELL!!
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HOW CAN WE TELL WHEN WORK IS DONE?
2 CHARACTERISTICS OF WORK BEING
DONE:
1. THE OBJECT MOVES WHEN A
FORCE IS APPLIED2. THE OBJECT MOVES IN THE SAME DIRECTION THAT THE FORCE IS APPLIED
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WORK OR NO WORK?
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CALCULATING WORK
HOW DO WE FIND HOW MUCH WORK IS BEING DONE?
WORK = FORCE X DISTANCEWORK = NEWTONS X
METERSUNITS = JOULES (J)
MORE MATH!!
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PRACTICE CALCULATING WORK
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WELL WHAT IF I GET MY WORK DONE QUICKER?
YOU’VE GOT POWER!!Power: the rate at which work is done
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CALCULATING POWER
POWER = WORK ÷ TIME
POWER = JOULES ÷ SECONDS
UNITS = WATTS (W)
EVEN MORE MATH!!
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CAN WE GET MORE POWER?
TWO WAYS TO INCREASE POWER:
YES!!
1. INCREASE THE WORK BEING DONE2. DECREASE THE TIME IT TAKES TO DO THE WORK