31.3 Worked Example - Find the Moment of Inertia of a Disc from a Falling Mass

MIT 8.01 Classical Mechanics, Fall 2016
View the complete course: ocw.mit.edu/8-01F16
Instructor: Prof. Anna Frebel
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[@trambakphysik7]

So finally we can just compare with the actual MI relation and say that g(t^2)/2h = 3/2 => t=sq.root(3h/g) right?

[@georgespritzer6320]

Don't you have to take the mass of the disk into accout?

[@waqqiali2960]

I think that has been taken care of under the notation I_(CM).

[@husseinrezai5356]

Torgue (I_CM) is the rotational equivalent of F = ma in translational motion so mass is taken into account