A small 500-g collar C can slide on a semicircular rod which is made to rotate about the vertical AB at a constant rate of 7.5 rad/s. B OK r = 500 mm Knowing that the coefficients of friction are s = 0.25 and k = 0.20, indicate whether the collar will slide on the rod if it is released in the position corresponding to 0 = 75. Also, determine the magnitude and direction of the friction force exerted on the collar immediately after release in the position corresponding to 0 = 750. The magnitude of the friction force is N and the direction is The collar slides on the rod if it is released in the position corresponding to 0 = 75. Say true or false. [(Click to select) O V