PROBLEM 9.195 Determine the mass moment of inertia of the 0.9-lb machine component shown with respect to the axis AA′. SOLUTION First note that the given shape can be formed adding a small cone to a cylinder and then removing a larger cone as indicated. Now 2.4or 1.2 in.0.41.2hhh+==The weight of the body is given by ( ) ( )123123WmggmmmgVVVρ+−=+−or ()3222231 ft0.9 lb32.2 ft/s0.82.40.21.20.63.6in3312in.ππρπ=×+−×( )332.2 ft/s2.792530.029090.7854010 ft−+−×or 2413.7266 lb s /ft=⋅Then ( )32113.7266 2.79253100.038332 lb s /ftm−=⋅( )213.7266 0.02909100.000399 lb s /ft
This is the end of the preview. Sign up
access the rest of the document.
This note was uploaded on 07/11/2011 for the course EGM 2511 taught by Professor Jenkins during the Spring '08 term at University of Florida.