3. A truck has four identical springs that support its weight: one for each tire. When a boulder with a mass of m= 950 kg is placed in the bed of the truck, the springs compress by a distance of 7.1 cm. Taking the four springs of the truck to be in parallel with one another, what is the spring constant of one of the springs? Hint: Each of the four springs has an identical spring constant k. Use Hooke's Law first to find the net spring constant first knet. Then use the net spring constant knet to find the individual spring constants k.