A spool whose inner core

A spool has a whose inner core has a radius of 1 cm and whose end caps have a radius of 1.50 cm has a string tightly wound around the inner core. The spool is free torolll without slipping on a horizontal surface. If the spring unwinds horizontally from the top of the core with a spped of 29cm/s, what is the speed of the spool


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