A1-kg collar can slide on a horizontal rod that is free to rotate about a vertical shaft. the collar is initially held at a by a cord attached to the shaft. a spring of constant 30 n/m is attached to the collar and to the shaft and is undeformed when the collar is at a. as the rod rotates at the rate ˙ θ 5 16 rad/s, the cord is cut and the collar moves out along the rod. neglecting friction and the mass of the rod, determine (a) the radial and transverse components of the acceleration of the collar at a, (b) the acceleration of the collar relative to the rod at a, (c) the transverse component of the velocity of the collar at b. and vr at b