Calculate Weight of "Weightless" Ichthyosaurus in Metric Tonnes

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SUMMARY

The discussion focuses on calculating the weight of a "weightless" ichthyosaurus, specifically one with a volume of 3m³. The relevant equation used is B = V x density x g, where g is the acceleration due to gravity (9.81 m/s²) and density is assumed to be 1000 kg/m³ for fresh water. The conclusion drawn is that the weight of the ichthyosaurus is equivalent to the weight of the displaced liquid, which is determined by the volume and density of the water it displaces.

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Homework Statement


Fossilized ichthyosaurus remains enable us to estimate their volume. If we assume that a
3m^3 icthyosaurus was "wightless" when it swam under water. What was its weight in metric tonnes?

Homework Equations


B=Wdisp. lqd ??



The Attempt at a Solution


B=V x density x g
g=9.81
density= 1000 kg/m^3 (assuming fresh water)
V=3m^3

plugging this into the equation would give me B .. not weight??
 
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Weightless means
mg = weight of the displaced liquid.
 

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