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Finding the moment of intertia

  • Thread starter jumbogala
  • Start date
  • #1
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Homework Statement


A solid sphere of mass 2 kg and 5 m radius is in space. Find its moment of inertia.


Homework Equations

2
moment of inertia of a solid sphere about its diameter: [tex]\frac{2}{5}[/tex]MR2, where M is the mass of the sphere and R is its radius.

The Attempt at a Solution


I = mr^2 = (2 kg)(25 m^2) = 50 kgm^2

Is that right, or am I totally out to lunch? Seems too easy.
 
Last edited:

Answers and Replies

  • #2
rock.freak667
Homework Helper
6,230
31
Yes that looks correct to me.
 

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