Engineering Guide CDA3000
A-21
Appendix A Formula bank
DE
EN
1
2
3
4
5
6
7
A
Long, thin bar with pivot point at end of bar
Rectangular plate with pivot point at center
of gravity
Solid ball with rotary axis through center of
gravity
Thin-walled ball shell with rotary axis
through center of gravity
Table 7.15 Mass moments of inertia of bodies
J
m
3
----
l
2 A ρ⋅
3
----------
l
3
⋅=⋅=
l
A
m
J
m
12
-----
h
2
b
2
+()⋅=
b
l
h
J
2m⋅
5
-----------
d
2
--
2
πρd
5
⋅⋅
60
--------------------=⋅=
d
m
J
2m⋅
3
-----------
d
2
--
2
πρδd
4
⋅⋅⋅
6
----------------------------=⋅=
d
m
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