Example 11-1: Object rotating on a string of changinglength.A small mass m attached to the end of a stringrevolves in a circle on a frictionless tabletop. Theother end of the string passes through a hole in thetable. Initially, the mass revolves with a speed v, = 2.4m/s in a circle of radius R, = 0.80 m. The string is thenpulled slowly through the hole so that the radius isreduced to R, = 0.48 m. What is the speed, v, of themass now?

Given: The velocity of a small mass at the radius R1 = 0.80 m is v1 = 2.4 m/s The velocity of a…

Answered: Example 11-1: Object rotating on a…

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