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Weight of copper hanging/submerged

  • Thread starter Mattc
  • Start date
A scale reads 220N when a piece of copper is hanging from it. What does the scale read when it is lowered so the copper is submerged in fresh water.

From a given chart

Density:
copper is 8930 kg/m^3
fresh water is 1000kg/m^3

I found my volume of copper to be .0025m^3

I'm just not sure which direction to go now?
 
Last edited:

djeitnstine

Gold Member
614
0
What forces are involved in buoyancy? Draw a free body diagram. Also write down the definition of buoyancy? Does anything click?
 

Integral

Staff Emeritus
Science Advisor
Gold Member
7,185
54
Since when was volume measured in Kg?
 
The forces involved are those from bottom and those on top of object. I have drawn the diagram and I think I know the connection I'm trying to make. The volume of the displaced fluid times density has to relate to the buoyant force? I think its the Newtons thats throwing me off
 
Since when was volume measured in Kg?
indeed my teach would've smacked me
 
geezzzz nevermind I got it. I thought i was looking over something simple.


While obtaining the forces I was neglecting my 9.8m/s^2
 

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