Density of sphere

  • Thread starter anoel
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  • #1
anoel
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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?
 

Answers and Replies

  • #2
Filip Larsen
Gold Member
1,592
504
Assuming you had density written up in your answer like [itex]\frac{6M}{\pi d^3}[/itex] or similar (in the post above you missed some parenthesis) in I don't see anything wrong.
 

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