A light spring of constant 145 N/m rests vertically on the bottom of a large beaker of water. A 5.39 kg block of wood of density 693 kg/m³ is connected to the top of the spring, and the block-spring system is allowed to come to static equilibrium. What is the elongation of the spring? (The acceleration of gravity is 9.8 m/s²). Answer in units of cm.
a) 3.26 cm
b) 3.65 cm
c) 4.12 cm
d) 4.58 cm
