Recent content by Prashant123

Oh ok.. but is there a proof for why should Ueff have a minima?

Yes. But I want to know if the statement "circular motion is possible in this case when Ueff has a minima when plotted against r" is true and how, as for n=1, Ueff= -Gm1m2/2r and this does not have a minima.

Homework Statement Consider a particle moving in the potential U (r)= -A/r^n, where A>0. What are the values of n which admit stable circular orbits? Homework EquationsThe Attempt at a Solution I tried to solve by putting dr/dt=0 in the total energy equation E= T + Ueff. But it didn't work...