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AP physics- finding buoyant force!

  • #1
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Homework Statement



A cubic meter of some material has a mass of 8600 kg. The block of material is lowered into a lake by a strong cable until the block is completely submerged. Find buoyant force on the block.

Homework Equations



Fb= p x V x g.
p= density of fluid, density of water is 1 g/cm^3.
V= displaced volume
g=9.8 m/s


The Attempt at a Solution


So far I have Fb= 1g/cm^3 x V x 9.8 m/s. I need to find V or the volume displaced by the cube in water. How do I do this? Any help would be appreciated! Thanks!
 

Answers and Replies

  • #2
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Have you tried using Fb=Fg?
 
  • #3
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What is the equation for Fg?
 
  • #4
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8600 kg x 9.8 m/s^2? Yes tried this, says it is wrong. My answer needs to be in newtons
 

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