Consider a particle that feels an angular force only, of the form F = mr. (Theres nothing all that physical about this force. It simply

Consider a particle that feels an angular force only, of the form Fθ = mrθ. (There’s nothing all that physical about this force. It simply makes the F = mα equations solvable.) Show that r = √Aln r + B, where A and B are constants of integration, determined by the initial conditions.