Recent content by Mechatroni

i'm not so good at this lecture. The part I'm confused is there is 3 different regions in the shaft so do i have to calculate for each of them and take the lowest one? i know the Rayleigh Method and the Dunkerley's Equation but i need to use m ( mass ) in those equations , the problem is only E...

Homework Statement Determine the intrinsic first critical speed of a circular steel shaft supported by two bearings E=207GPa How can i determine it I'm very confused about this question , you can see the question at the attachment. Thanks for the help