emmiepie
  • emmiepie
A 98-N sack of grain is hoisted to a storage room 50 m above the ground floor of a grain elevator a. How much work was required? b. What is the potential energy of the sack of grain at this height? c. The rope being used to lift the sack of grain breaks just as the sack reaches the storage room. What kinetic energy does the sack have just before it strikes the ground floor?
Physics
chestercat
  • chestercat
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shamim
  • shamim
a. W=F*h
shamim
  • shamim
Here W=work F=force h=height
shamim
  • shamim
W=?

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shamim
  • shamim
b. P.E=w
emmiepie
  • emmiepie
This isn't helping me.
shamim
  • shamim
Ok. I m trying to help u!!
shamim
  • shamim
U know Work=force*displacement Right?
shamim
  • shamim
Weight of sack is=98N Right?
shamim
  • shamim
So u need to spply a force of 98N to lift the sack of grain.
shamim
  • shamim
Now displacement =?
shamim
  • shamim
Here displacement = height=50m
shamim
  • shamim
So W=?
shamim
  • shamim
Response plz!!

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