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QUESTION
the puck is initially orbiting with speed v=1.50m/s in a circle of radius r = 0.
a puck of mass m=50g is attached to a taunt cord passing through a small hole in a frictionless, horizontal surface. the puck is initially orbiting with speed v=1.50m/s in a circle of radius r = 0.300m. The cord is then slowly pulled from below, decreasing the radius of the circle to r=0.100m. What is the puck's speed at the smaller radius?
