Problem 1 The 2-kg slider A is pushed along the curved bar by the slotted bar. The curved bar lies in the horizontal plane, and its profile is described by r = (0/7c + 1.5), where 0 is in radians and r is in meters. The angular position of the slotted bar is 8 = 3t rad. Determine the polar components of the total external force exerted on the slider when 8 = 60°.
Problem 2 In Problem 1, suppose that the curved bar lies in the vertical plane and that the weight is an unknown value W. Determine the polar coordinates of the total force exerted on A by the curved and slotted bars in terms of time t and weight W.