Two boxes of massm1 = 15 kg and mass m2 = 22 kg are linked by a spring with spring constant k =62 N/m. The mass of the spring is negligible. A horizontal force of F = 180 Nis applied to mass m1, which is to the left of massm2, causing both boxes to move together towards the right. The coefficient of kinetic friction u_k among the boxes and the surface is 0.25.
1. What is the acceleration of mass m1?
2. What is the force exerted with the spring on massm1?
3. What is the net force acting on mass m2?
4. How much does the spring compress?
5. What is the applied force if both boxes move at constant velocity and what would be the spring compression in this case?