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Nov
23
comment How do you combine two rigid bodies into one?
@Qmechanic I really did want to know where the velocities go if two independent bodies become a single rigid body. However, as an after-thought I wanted to know if you can talk about the instantaneous velocities of a single system composed of multiple independent rigid bodies. E.g., if a ballistic rigid body were to fracture into multiple pieces, the linear and angular momentum of the system should be conserved; so I wonder if you could add up the pieces and get a measurement of the instantaneous linear and angular velocities of the system.
Nov
23
awarded  Scholar
Nov
23
accepted How do you combine two rigid bodies into one?
Nov
23
comment How do you combine two rigid bodies into one?
Okay. Works for me if no one's going to disagree. Would this still hold to describe the instantaneous state of the combined system if the two bodies weren't actually rigidly combined?
Nov
22
awarded  Student
Nov
22
awarded  Editor
Nov
22
revised How do you combine two rigid bodies into one?
Update
Nov
22
comment Why does the moon face earth with the same side?
Probability of any satellite being symmetrical seems to be rather small. But the planets don't seem to experience tidal-lock with respect to the sun. How many of the other planet's moons experience this in the solar system?
Nov
22
awarded  Supporter
Nov
22
asked How do you combine two rigid bodies into one?