I've got an interesting question about a Buoyancy problem we were given in Lab today. We were given an unknown block and we were asked to find its density without directly measuring its volume.(adsbygoogle = window.adsbygoogle || []).push({});

So we found the mass in air and in water.

Mass in air was 267.65g

Mass in water was 237.76g

Then using the equation T+B_{water}=mg we found the volume of the block.

We then found the density using density = m/V.

My desnity came out to be 8.58x10^{3}kg/m^{3}

He then said that because we didn't account for the buoyant force of air that our density will be off a bit. So my question is how would you find the exact mass and volume of the unknown block if they BOTH change with no buoyant force. I am always left with two variables that I cant find no matter how many different ways i try to combine equations. Is there a different approach? Its like trying to find the mass and volume of my unknown block in a vacuum but I don't have one :(

Any help is greatly appreciated!

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# Buoyancy Problem

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