George swings a ball around him, in uniform circular motion.  The circle's radius is r.  George inadvertently releases the string, and the ball goes outward.  He catches the string again, and now the ball goes around him at a new rotation rate, with a new radius r + Δr.  Calculate the new rotation rate (in rev/s). r = 2 m Δr = 0.7 m Original rotation rate = ωi = 2 rev/s The ball's mass is m = 122 grams

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