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Archimedes Principle

  • Thread starter pat666
  • Start date
  • #1
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Homework Statement


a 6500kg iceberg is afloat in the sea. the icebergs density is 930kg/m^3 and the sea water has density of 1030kg/m^3
a) find the buoyant force on the iceberg
the volume of water displaced and the fraction of the icebergs volume that is below the waterline.


Homework Equations



F_B=x_displaced=rho g V

The Attempt at a Solution


i have no idea how to do this i thought that maybe since its not sinking its in equilibrium relative to something but i have no idea if thats even right or not.. thanks for any help in advance.
 

Answers and Replies

  • #2
Borek
Mentor
28,327
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You are on the right track. It is pulled down by gravity, and pushed up by buoyancy - these are two forces in equilibrium. One of these is very easy to calculate from the data given - that gives you the other one (they are in equilibrium, which means they are identical).
 
  • #3
709
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ok thank you i cant believe i missed that - problem solved thanks to you and PF!!
 

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