A baseball pitch is viewed from above ($($such as from a blimp).$).$ The curve of the pitch is exaggerated. The ball ($($m =0.15$=0\mathrm{.}15$ kg,$,$ radius =0.037$=0\mathrm{.}037$ m)$)$ is thrown horizontally and straight at home plate at 83$83$ mph.$.$ The  force from the spin is 0.44$0\mathrm{.}44$ N.$.$ What spin has the pitcher put on the ball? Give the answer in rpm.$.$ Round the final answer to two decimal places.