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# Public Formula Library

### ROTATION

Just for viewing purposes. You can store and calculate this formula only inside the application.

### Formula name

ROTATION

### Description

energy of rotation

### Syntax

E = (1/2) * J * ω^2

/* The moment of inertia J of a cylinder rotating around his axis is J = m/2 * r^2 , where m means the mass and r the radius of the cylinder. So the rotational energy of a cylinder will be : */

ErotCyl = m/4 * (r*ω)^2

/* The moment of inertia J of a cylinder rotating around his axis is J = m/2 * r^2 , where m means the mass and r the radius of the cylinder. So the rotational energy of a cylinder will be : */

ErotCyl = m/4 * (r*ω)^2

### Notes

The kinetic energy of a rotating mass is proportional to its moment of inertia relative to the axis of rotation. ω stands for the angular velocity of the rotation.

### Category / Subcategory

Physics / Classical mechanics

### Creator

Physics@abacal.com

### Account

Free

### Tags

formula rotation energy

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