posted by James .
A spring is mounted horizontally. A crate which has a mass of 8.5kg is pressed against the spring with a force of 350N. As a result the spring is compressed a distance of 82.0cm. The mass is then released and is allowed to slide along the horizontal, frictionless surface.
What will be the velocity of the crate after it has left the spring? (5.81m/s)
How far will the mass slide before it comes to a halt? (2.65m)
Bad question. The force changes on the spring as it is pushed.