work done = force × distance moved

Wd = F × d


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Work formula.ppt (284 KB)
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Tell the person next to you...
· Imagine pushing a king sized bed from one side of the classroom to the other
· Would it make you feel tired?
o Yup!
· Would you have to work hard to push it?
o Yup!
· What could you change so you have to do less work pushing?
o Anything that decreases the force needed (reduce friction by putting wheels on it, ice under it, etc)
o Anything that decreases the distance travelled (only push it half way!, etc)
o So the formula for work must contain force and distance
Posterous theme by Cory Watilo