(adsbygoogle = window.adsbygoogle || []).push({}); Buoyancy problem, please check my work :)

Can you check my work here?

A crown is weighed in air and submerged in water. The scale reads 7.84 N in air and 6.86 N in water.

find (a) the buoyant force (b) the volume of the crown (c) the density of the crown (d) is the crown made of gold?

(a) 7.84-6.86=.98 N

(b) Bouyant force=Volume(submerged object)*density(liquid) *gravity

so .98=v*1000*9.8 V=.0001 m^3 (=.1 cm^3)

(c) Density Object= (Weight object/Bouyant Force)*Density Liquid

p=(7.84/.98)1000 ;p=8000 kg/m^3

(d) I'm not sure the density of gold, I think its more than double this density though. So No, the crown is not made of Gold.

Thanks for any help!!!

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# Homework Help: Buoyancy problem, please check my work

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