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

You are asked to measure the moment of inertia of a large wheel for rotation about an axis through its center. You measure the diameter of the wheel to be 0.740 m and find that it weighs 280 N. You mount the wheel, using frictionless bearings, on a horizontal axis through the wheel's center. You wrap a light rope around the wheel and hang a 8.00 kg mass from the free end of the rope. You release the mass from rest; the mass descends and the wheel turns as the rope unwinds. You find that the mass has a speed 5.00 m/s after it has descended 2.00m. What is the moment of inertia of the wheel for an axis perpendicular to the wheel at its center?

2. Relevant equations

E initial = mgh

E final = 1/2mv^2 + 1/2[tex]I[/tex][tex]\omega^2[/tex]

3. The attempt at a solution

I tried using conservation of energy and then solving for [tex]I[/tex]

But I don't think that is the way to go.

Any help is appreciated, Thanks!

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# Homework Help: Measuring the moment of inertia

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