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This page provides a diagram and functioning calculator to compute the mass moment of inertia for a cone around it's z axis, an axis through the tip, the base and the centre of mass.

Iz axis=13mr2I_{z\ axis} = \frac{1}{3}mr^2

Itip=m(320r2+35h2)I_{tip} =m(\frac{3}{20}r^2+\frac{3}{5}h^2)

The following are the variables for the equations...

  1. I = the moment of inertia (
    
    ).
  2. h = the height of the cone (m).
  1. m = the body's mass (kg).
  1. r = distance between the centroid of the body and the axis, i.e. the radius (m).

Ibase=m(320r2+110h2)I_{base} =m(\frac{3}{20}r^2+\frac{1}{10}h^2)

Icentre mass=m(320r2+380h2)I_{centre\ mass} =m(\frac{3}{20}r^2+\frac{3}{80}h^2)


Moment of Inertia For A Cone Calculator

Inputs



Mass, m
:15.00kg



Cone height, h
:3.00m



Radius, r
:2.50m


Output



Moment of Inertia, I (general)
:31.25kg m^2


Igeneral=13mr2I_{general} = \frac{1}{3}mr^2


Moment of Inertia, I (tip)
:95.06kg m^2


Itip=m(320r2+35h2)I_{tip} =m(\frac{3}{20}r^2+\frac{3}{5}h^2)


Moment of Inertia, I (base)
:27.56kg m^2


Ibase=m(320r2+110h2)I_{base} =m(\frac{3}{20}r^2+\frac{1}{10}h^2)


Moment of Inertia, I (centre mass)
:19.13kg m^2


Icentre mass=m(320r2+380h2)I_{centre\ mass} =\\m(\frac{3}{20}r^2+\frac{3}{80}h^2)

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