4.} The spring below is shown at equilibrium at point A. Picture that we are looking down at this system with a bird's eye view, and that the mass is sitting on a frictionless table. It is compressed to point El. When it is released, the mass is pushed forward (past its initial equilibrium point at point C} and onto where it is stretched to a maximum at point D. Note this system will continue back to point C, and oscillate about its equilibrium point. a. At points B and D on the diagram, draw the direction of the spring force acting on the block. b. Between positions B and C, draw what direction the velocity of the block is in. Do the same between positions C and D. c. Given that the spring force is equal to -kx [where k is a spring constant and x is the position relative to the equilibrium point shown), draw a graph of force versus distance for the block as it travels from position B to position D. d. What does the graph you drew tell you about the relationship between work, velocity direction, and spring force? e. At what pointlsl on this system is/are the spring potential energy at its maximum? What about its minimum? .120 Spring at EQUiIIDTiUlTI [Not stretched and not compressed)