Solving for Car Mass with Gauge Pressure and Surface Area | Physics Problems

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jrd007 said:
Isn't bouyancy force = pVg? - I know neither p(denisty) or volume or the Fb so how can I solve for it?
The fluid is water, so you should know the density. Also: true weight - buoyant force = apparent weight.
 
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denisty of water is 1000 kg/m^3

So since mass is 63.5 I just divide that by the volume and tha give me density?
 
Yes. Once you figure out the volume you can get the density by [itex]\rho = m/V[/itex]. (Be careful with units.)
 
yes but is it not jus 63.5/1000 ? I thought that was why I was trying to find the volume of water?
 
1000 kg/m^3 is the density of water, not the volume of water displaced. (You'll need the density and the buoyant force to solve for the volume.)
 
Actually you you can just minus the two to get the water displaces and change it into kg = .0081

63.5/.0081 = 7839! :)
 

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