Understanding Precession, Nutation, and Spin in Rotating Objects

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SUMMARY

This discussion focuses on the dynamics of precession, nutation, and spin in rotating objects, specifically a cylinder with height L and base radius R. The centripetal acceleration experienced by an accelerometer on the base radius is defined as Rω². The user seeks clarification on the relationship between angular velocities, proposing that the total angular velocity ω can be expressed as ω = √(ω²P + ω²N). Additionally, the user speculates that the sensor's experience during nutation and precession involves a time-dependent function of R, potentially incorporating a sine term.

PREREQUISITES
  • Understanding of angular momentum and rotational dynamics
  • Familiarity with the concepts of precession and nutation
  • Knowledge of centripetal acceleration calculations
  • Basic principles of sensor technology and accelerometers
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  • Research the mathematical models of precession and nutation in rigid bodies
  • Explore the effects of angular velocity on sensor readings in rotating systems
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Students and professionals in physics, mechanical engineering, and robotics who are interested in the behavior of rotating objects and the implications for sensor technology.

Bobster
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Hi guys !

Im trying to get my head round precession, nutation and spin.

Suppose I have a cylinder of height L, base radius R. Initially it is just spinning about its central axis (i.e. line joining cone tip to the centre of base). In this scenario,

centripetal acceleration experienced by say an accelerometer placed on the radius of the base would be = Rω2.

However when it starts spinning and nutating with angular velocities say ωP and ωN,

am I right in thinking ω = √ω2P2N ?

And also, what would my sensor 'experience' now that it is nutating and precessing ? I am guessing it would be a Rω2 sin term but this time 'R' would be a time dependent function and not constant. What do you think ?
 
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Any ideas ?
 

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