(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Derive an expression for the moment of inertia about the axis of symmetry for

a cylinder of mass M , length L and radius a, where the mass density decreases as a

function of distance from the axis as 1/r

2. Relevant equations

3. The attempt at a solution

1) am i right in thinking this would just be the same as the MOI of a disk of same mass?

and is the answer 2pi/3 a^3 or alternatively 1/3 M/L a^3

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Moment of inertia and axis of symmetry

**Physics Forums | Science Articles, Homework Help, Discussion**