Calculate Density of Sphere: Mass, Diameter & Volume

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SUMMARY

The discussion focuses on calculating the density of a sphere using its mass (M) and diameter (d). The volume of the sphere is expressed as V = (d^3 × π) / 6, derived from the formula for the volume of a sphere (V = 4 × π × r³ / 3) with the relationship d = 2r. The density formula is correctly stated as density = M / V, leading to density = (6M) / (πd³). The confusion arises from formatting issues in the presentation of the equations rather than the calculations themselves.

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  • Familiarity with algebraic manipulation of equations
  • Knowledge of mathematical constants, particularly π (pi)
  • Ability to interpret and format mathematical expressions correctly
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Homework Statement



1.express the volume in terms of the diameter d of the sphere
2.write an equation to find the density of the sphere in terms of mass M and diameter d

Homework Equations



sphere Volume = 4 x pi x r^3 / 3
density = mass/volume


The Attempt at a Solution



1. d=2r so V = d^3 x pi / 6
2. density = M / V(=d^3 x pi /6) = 6M/pi x d^3



but my teacher said it is wrong. what is wrong with my answer?
 
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Assuming you had density written up in your answer like \frac{6M}{\pi d^3} or similar (in the post above you missed some parenthesis) in I don't see anything wrong.
 

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