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Re: Moment of Inertia Calculations
Hello @abinand_palanisamy, Your calculation (5^2 * 5.15) describes an object with 100% of the mass (5.15 lb) located 5cm from the axis. In actuality this mass is distributed throughout the solid, with a good portion of it located closer to the axis, reducing the mass moment of inertia. The hole in the center affects the… -
Moment of Inertia Calculations
Hi everyone, I'm new to OnShape, and I have some questions on how the moment of inertia is calculated. My dimensions for this cube is 10 cm for each side length, with a diameter of 8 cm semi-sphere cut out of the top face of the cube. For example, as seen in the image, the moment of inertia along the X-axis is 84.61. Im… -
Re: Moment of Inertia Calculations
As said above, the moment of inertia for a point mass is mr^2. Any shape where the mass is not all a constant distance, r, from the axis of rotation will involve more math. A lot of shapes are easy to look up in a table. Like for a rectangular cube about its center, its 1/6 ML^2. And for a sphere (and a hemisphere) it's…
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