Please solve this question in the picture below.

13. [-/2 Points] DETAILS SERCP9 13.P.001.SOLN. MY NOTES ASK YOUR TEACHER A block of mass m = 0.56 kg is attached to a spring with force constant 108 N/m is free to move on a frictionless, horizontal surface as in the figure below. The block is released from rest after the spring is stretched a distance A = 0.13 m. (Indicate the direction with the sign of your answer. Assume that the positive direction is to the right.) WWWWWW m (a) At that instant, find the force on the block. N (b) At that instant, find its acceleration. m/s