1. The problem statement, all variables and given/known data http://www.lboro.ac.uk/faculty/eng/engtlsc/Eng_Mech/pastpapers/exam2001.pdf Problem B6 Collar A slides along a horizontal rod that is rotating as shown in Figure Q.B6 with an angular velocity of 5 rad/s in the anti-clockwise direction. At a distance of 200 mm from the axis of rotation of the rod, the collar has a velocity of 3 m/s and an acceleration of 2 m/s2, both relative to the rod, in outward direction. Determine the (absolute) velocity and acceleration of the collar at the instant shown. (figure in the upper link) 2. Relevant equations 3. The attempt at a solution using Vr = r[dot] and V(thetta) = r.thetta[dot] and the corresponding equations for a(radial) and a(thetta) But how to determine the values of r and its derivatives??