A 0.500-kg block, attached to a spring with length 0.60 m and force constant 40.0 N/m, is at rest with the back of the block at point on a frictionless, horizontal air table (the figure ). The mass of the spring is negligible. You move the block to the right along the surface by pulling with a constant 20.0-N horizontal force.
What is the blocks speed when the back of the block reaches point , which is 0.25 m to the right of point ?
When the back of the block reaches point , you let go of the block. In the subsequent motion, how close does the block get to the wall where the left end of the spring is attached?