The 2-lb piece of putty is dropped 6 ft onto the 18-lb block initially at rest on the tw...

The 2-lb piece of putty is dropped 6 ft onto the 18-lb block initially at rest on the two springs, each with a stiffness k = 3 lb/in. Calculate the additional deflection δ of the springs due to the impact of the putty, which adheres to the block upon contact.