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Question 1 A particle P of mass m = 1 kg arrives at point O with a horizontal velocity Uo and starts rolling do a circle with radius R = 1.5 m. The particle is attached to the point O by means of a linear spring stiffness k = 65 N/m that is unstretched when the particle is at O. Assume that during the motion P along the circle, the spring follows the circle. Let N = {nx, ny} be a fixed reference frame as shown the figure and let B = {bx, by} be a reference frame attached to P so that bx is tanger the circular path and by is perpendicular to the circular path. For convenience, take g = 10 m/s² i this question. O¦ ny 0/ nr P

13- O A) 30 mm O B) 65 mm C) 50 mm O D) 80 mm O E) 90 mm

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