What is the density of the bird statue?

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SUMMARY

The discussion focuses on calculating the density of an antique yellow bird statuette using measurements from a spring scale. The statuette's weight in air is 11.81 N, while its weight submerged in water is 11.19 N. By applying the principles of buoyancy and the formula for density (ρ = m/v), participants can determine the statuette's volume and assess whether it is made of gold (ρ = 19.3 x 10³ kg/m³) or gold-plated aluminum (ρ = 2.7 x 10³ kg/m³).

PREREQUISITES
  • Understanding of buoyancy principles
  • Familiarity with the density formula (ρ = m/v)
  • Basic knowledge of spring scales and weight measurements
  • Concept of specific gravity and its applications
NEXT STEPS
  • Calculate the volume of the statuette using the buoyant force
  • Determine the mass of the statuette from its weight in air
  • Research the properties of gold and gold-plated aluminum
  • Explore applications of density in material identification
USEFUL FOR

Students in physics or engineering, hobbyists interested in material properties, and anyone involved in antique appraisal or restoration.

xoxjojobxox
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Homework Statement



An antique yellow statuette of a bird is suspended from a spring scale. The scale reads 11.81 N when the statuette is suspended in air, and it reads 11.19 N when the statuette is completely submerged in water.
a. Find the volume of the statuette
b. Is the bird made of gold? (ρ=19.3 x 103 k/m3g)
or gold-plated aluminum? (ρ=2.7 x 103 k/m3g)

Homework Equations


ρ(density)=m/v (mass/volume)
FT+Fb=Fg
Fg=mg
 
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