• Support PF! Buy your school textbooks, materials and every day products Here!

Moment of Inertia - Hollow Objects

  • Thread starter JerS
  • Start date
  • #1
2
0

Homework Statement



1. Given that the moment of inertia of a thin conical shell, of base radius a and height 3a, about
an axis through its apex perpendicular to its symemtry axis is 19
4 ma2, and that the centre of
mass of the shell is along its symmetry axis a distance a from the base and 2a from the apex,
find the moment of inertial of the conical shell about an axis which passes through its centre
of mass and is perpendicular to its symmetry axis.
2. A partially hollowed out thick uniform spherical shell, of mass m and outer radius a, has
moment of inertia 23
15 ma2 about a tangent. What is the moment of inertia of the shell about a
diameter, given that its centre of mass is at the centre of the shell?


Homework Equations



I = Sigma m (r^2)



The Attempt at a Solution



Lots on paper



Thanks tons, again this is for an exam tomorrow
 

Answers and Replies

  • #2
tiny-tim
Science Advisor
Homework Helper
25,832
249
Welcome to PF!

Hi JerS! Welcome to PF! :smile:

(try using the X2 tag just above the Reply box :wink:)

Hint: use the parallel axis theorem …

what do you get? :smile:
 

Related Threads for: Moment of Inertia - Hollow Objects

  • Last Post
Replies
15
Views
11K
Replies
1
Views
6K
  • Last Post
Replies
6
Views
27K
  • Last Post
Replies
6
Views
9K
Replies
2
Views
6K
Replies
14
Views
31K
Replies
3
Views
4K
Replies
2
Views
1K
Top