Physics 11 help?

  • Thread starter roxxyroxx
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  • #1
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Physics 11 help??!!

Homework Statement



a car jack applies a force of 3000N to lift one side of a car a distance of 10 cm. in order to accomplish this the person using the jack needed to apply a force of 1200N to the handle moving it 30 cm. what is the jack's efficiency?

Homework Equations



eff = (mgh/f*d) x 100%

The Attempt at a Solution



idk where 2 start??
 

Answers and Replies

  • #2
Delphi51
Homework Helper
3,407
11


Write the formula. Replace each letter with the appropriate number.
 

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