The offset slider-crank mechanism illustrated in the figure (unit is mm) is driven by link 2. At this moment, velocity of point C is 1000 mm/s to the left. Determine the instantaneous velocity of point B and point D, and the angular velocity of links 2 and 3. Draw the velocity polygon to solve this problem. Show the intermediate steps to get full credit. Use a scale of 1 mm represents 40 mm/s. The black dot is the origin point of the velocity polygon.
