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Physics
Classical Physics
Mechanics
How to Determine the Axis of Rotation
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[QUOTE="Enryque, post: 6225869, member: 591168"] We can assume a[I] flat motion system[/I]. Then we have 3 independent variables in the context of an inertial coordinate system : (x,y) for the position of the center of masses and φ for the bar's angle. From this information you can calculate the potential energy due to gravity an due to the strings and complete the Lagrangian as L=KineticEnergy-PotentialEnergy; where KineticEnergy is the sum of the kinetic energy of the center of masses plus rotational energy relative to the center of masses = 1/2 I (dφ/dt)^2 and I= moment of inertia relative to the center of masses. [/QUOTE]
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Forums
Physics
Classical Physics
Mechanics
How to Determine the Axis of Rotation
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