The minimum speed of a gyroscope required to achieve force precession is any non-zero speed, which results in a consistent 90-degree offset for small input torque. The noticeable effect of precession is contingent upon the initial angular momentum relative to the input torque. In contrast, devices like box fans may not exhibit significant precession due to their lower mass and additional aerodynamic effects, which influence the moment of inertia.
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Any non zero speed will have the 90deg offset for a small input torquerichengle said:Summary:: min gyro speed to yield force precession
Does anyone know what the minimum speed of a gyro to make it so a force at 0deg will yield a movement at 90deg... or even better, what the angle is wrt speed... see http://www.copters.com/aero/gyro.html for pictures.
A.T. said:Any non zero speed will have the 90deg offset for a small input torque
While the offset is always 90 deg, the noticeably of the procession effect depends on initial angular momentum vs. input torque.
The moment of inertia depends on the mass and its distribution. With a fan you additionally have aerodynamic effects.richengle said:thanks, that explains a bike wheel. but i tried it with a fan, and didnt notice any precession. is it because it has less mass?
What kind of fan did you use?richengle said:thanks, that explains a bike wheel. but i tried it with a fan, and didnt notice any precession. is it because it has less mass?
box fanLnewqban said:What kind of fan did you use?