HOME
ID : 6419
Moment-of-inertia Formulas
When calculationg the hand's or tool's moment of inertia around the T axis, refer to the moment-of-inertia formulas given below.
1. Cylinder (1) (Axis of rotation = Center axis)
|
4. Sphere (Axis of rotation = Center axis)
|
2. Cylinder (2) (The axis of rotation passes through the center of gravity.)
|
5. Center of gravity not on the axis of rotation.
|
3. Rectangular parallelepiped (The axis of rotation passes through the center of gravity.)
|
l : Moment of inertia [kgm2] m : Mass [kg] r : Radius [m] a, b, c, L : Length [m] |
Calculation Example of Hand's Moment of Inertia Around the T Axis
Calculation example : When calculating the moment of inertia of a complicated shape, divide it into simple parts as much as possible for easier calculations.
As shown in the figure below, divide the hand into three parts ( (1), (2), (3) ).
|
ID : 6419