Problem 13.88 2 of 5 > Review Rod O A rotates counterclockwise with a constant angular velocity of 0 = 5 rad/s. The double collar B is pin-connected together such that one collar slides over the rotating rod and the other slides over the horizontal curved rod, of which the shape is described by the equation r = 1.5(2- cos 6) ft. (Figure 1) Part A If both collars weigh 0.75 lb, determine the magnitude of the normal force which the curved rod exerts on one collar at the instant @ = 140° Neglect friction. Express your answer to three significant figures and include the appropriate units. N= Value Units Submit Request Answer Figure < 1 of 1 > Provide Feedback Next > 8 = 5 rad/s r = 1.5 (2 - cose) ft