At point A of a horizontal disk rotating around a vertical axis. a spring is attached, at the other end of which a mass B of mass m = 20 g is attached. The spring stiffness is k = 1 N/m. Distance OA=5 cm. Length of the spring in an undeformed state l0=10 cm. What will be the potential energy of the spring when the disk rotates with an angular velocity w=100 rad/s?
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