I am just not too sure how to start this equation. The answer was given (i.e. Vc = 3698 cm^3), but I just need to know the steps on how to get to the answer.(adsbygoogle = window.adsbygoogle || []).push({});

A sand core used to form the internal surfaces of a steel casting experiences a buoyancy force of 225.63 N. What is the volume of the sand core in cm cubed.

Steel Density: 7.82 g/cm^3

Sand Core Density: 1.6 g/cm^3

Fb = Wm - Wc

Wc = (Mc)(Gravity) & Wm = (Mm)(Gravity)

D = M/V

I have tried rearranging the equation: 225.63 N = Wm - Wc --> Wm = 225.63 + Wc

Then substituting it into the equation: Wm = (Mm)(Gravity) --> 225.62 + Wc = (Mm)(Gravity)

I then isolate the... I pretty much get lost after that.

Thanks for the help

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# Homework Help: Buoyant Force of sand and steel

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