Truck suspensions have "helper springs" that engage at high loads. When the main leaf spring is compressed by a distance y0, the helper spring engages and then helps to support any additional load. suppose the leaf spring constant is 5.25 x 20^5N/m.
What is the compression of the leaf spring for a load of 5.00 x 10^5 N? How much work is done in compressing the springs?