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

A gyroscope consists of a uniform disc of mass M and diameter d attached at its centre to a light spindle of length l perpendicular to the plane of the disc.

i) Show that the moment of inertia, I, of the disc around the axis of the spindle is Md²/8.

2. Relevant equations

I=MR² Moment of inertia

3. The attempt at a solution

I cant understand why it becomes I=Md²/8 as R=d/2 and R²=d²/4 not d²/8

or am i missing something?

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# Homework Help: Moment of inertia and a gyroscope

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