The smooth particle has a mass of 80 g. It is attached to an elastic cord extending from O...

The smooth particle has a mass of 80 g. It is attached to an elastic cord extending from O to P and due to the slotted arm guide moves along the horizontal circular path r = (0.8 sin θ) m. If the cord has a stiffness k = 30 N/m and an unstretched length of 0.25 m, determine the force of the guide on the particle when θ = 60°. The guide has a constant angular velocity