1. The problem statement, all variables and given/known data The operation of this garage door is assisted using two springs AB and side members BCD, which are pinned at C. Assuming the springs are unstretched when the door is in the horizontal (open) position and ABCD is vertical, determine each spring stiffness k so that when the door falls to the vertical (closed) position, it will slowly come to a stop. Use approximate numerical values to explain your result. Where do I start? And can anyone please provide me with a guided solution?