Task: Text Categorization
Input (English): One device comprised of "sun" and "planetary" gears multiplies this quantity, which is responsible for gyroscopic precession. Despite having the same units as energy, this quantity is equal to energy divided by the angle of displacement. This quantity is sometimes expressed as (*) moment of inertia times angular acceleration, since it is also the time derivative of angular momentum. More commonly, the right-hand rule is applied when determining this quantity because it is the cross product of radius and force. When this net quantity equals zero, an object does not rotate. For ten points, identify this rotational analogue of force.
Output (English): Science