A 1 kg mass is connected to an immovable wall by a spring with spring constant k=2 N/m and you apply a pushing force of 30 N to move the mass from initial position =0 (where the spring is relaxed) to final position # = 2 (where the spring is stretched). Assume there are no other forces besides the spring force and pushing force
A) What is the work done by the external forces on the mass?
B) If the mass was initially at rest, what is the final velocity?