Hello, I completed A & B. I tried C and D, but I am stuck. Please help me figure out parts C and D. To solve part C, you may need to reference back to part B.

emE \\ 1 \\ Kg =ma Q (ak! *. 11m k x _ l 51 \\ , \"we\" I '70\" 3,293; 4. A box of 1 kg is attached to a spring oscillates in a state of periodic motion and experiences no damping i friction J. M if: __ u ' A] Show that the acceleration of an oscillating box is equal to a. : wzx where {.42 is the ratio of spring constant to mass. [2] max = 0* / - 10369\" 1 $3 B) Calculate the strain energy of the spring if the spring is compressed .25 m and it has a spring constant of 1000 Newtons per meter. [2] 1i . 15 j C] Determine the speed at which the box moves when it moves through the equilibrium position [rest position of the spring). [ 2 ] DJ Describe the force behavior of the box-spring system as it rests in the three positions below in terms of forces. Draw a free body diagram for the box-spring system at .25 compression, .25 tensile. and at equilibrium position. [4]