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A particle of mass m is under the central force created by the potential energy U(r)=A*r (A>0). The angular momentum of the particle is L (L is not equal to zero).

For E=(4/3)E0, find the maximum tangential kinetic energy in terms of (r0 and E0).

A hint is given in the figure.
If K.E(r) is maximum then K.E(t) is minimum.
If K.E(t) is maximum then K.E(r) is minimum.

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