Moment of Inertia of Annulus Ring

[@hasnainferdous729]

Best channel so far

[@mikekeizer1899]

Great Video! Loved how you mister Mackey'd your way through the question m'kay

[@PhysicsNinja]

Glad you enjoyed it!

[@snadia8722]

Thank you..it has really helped me

[@sandeepchauhan4411]

your videos are awsome

[@I_am_writting]

Great video sir. I was confused . U made the concept easy to grasp.tyvm

[@PhysicsNinja]

Glad it helped!

[@halcyoon_07]

lol, this guy dont know physics

[@Fatinalya-jj2yf]

loving the second method! thank you!

[@PhysicsNinja]

It’s my favorite as well

[@azizbekurmonov6278]

Thanks for video👍🏻

[@christopherodonnell7831]

Great video, thanks

[@matthewsarsam8920]

Wouldn’t the distance to the origin from any small mass in the ring be r^2+z^2

[@PhysicsNinja]

Yes, but we just want the distance of the mass to the axis of rotation, not the origin.

[@krelle5604]

Hi, im trying to calculate the inertia of a cylinder with a non-uniform mass,
In my uni project we have a annulus ring of cement and an annulus ring of pla plastic, that makes a cylinder. could i calculate the inertia for each annulus ring, and add them togther to find the inertia of the cylinder with a non-uniform mass?

[@krelle5604]

Dunno if non-uniform mass is the right word, English is not my first language, but i mean that i have a cylinder made up of a cement ring, in the outer layer of the ring and the center part of the ring is off pla plastic, could i divide them up into 2 diffrent annulus ring, calculate the inertia for each and add them togther to find the inertia for the full cylinder?

[@PhysicsNinja]

Yes, you can add them up

[@martinauld670]

So essentially the moment of inertia is independent of the thickness “h” cause I’ve got the same result for a 2D ring

[@PhysicsNinja]

Well is does depend on the Mass, so the thicker the ring the bigger the moment of inertia

[@ChilaNdo]

Saved from failing mechanics