Problem: One end of a horizontal spring with force constant 76.0 N/m is attached to a vertical post. A 4.00-kg can of beans is attached to the other end. The spring is initially neither stretched nor compressed. A constant horizontal force of 56.0 N is then applied to the can, in the direction away from the post.What is the speed of the can when the spring is stretched 0.400 m?At the instant the spring is stretched 0.400 m, what is the magnitude of the acceleration of the block?At the instant the spring is stretched 0.400 m, what is the magnitude of the acceleration of the block?