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geno921
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Hi, I remember reading that no work is done on an object in a circular orbit experiencing a centripetal force. However, what if that object experiences an external centripetal force greater than that which keeps its orbit in a radius r. That would cause the object to orbit with a smaller radius. Is the work done by that force still 0? Or would it simply be the change in the total kinetic energy of the system (by the work-energy theorem), or simply the constant force times the radius it traveled to its smaller orbit? I don't usually post, but this question baffles me.