Say you have a simple rigid body in space that is at rest or travelling with only translational motion at a constant speed. Say that the body is something like a rod and it's not rotating. So, at some point, an external force is acted on the rod, just for an instance and it is not acted on some axes that goes through the center of mass . How much of the energy goes in rotation and how much in translational movement and why??
Edit: As for force , I read in Force acting on a simple rigid body in space that , force on com does not divide. I am unable to link it with energy.
Should energy from translation motion be transferred to rotational, since entire force was spent on it? If yes, how do we calculate it?
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