A block of mass m = 1.9 kg is dropped from height h = 77 cm onto a spring of spring constant k = 1510 N/m (Fig. 8-38). Find the maximum distance the spring is compressed. My attempt: mgh = 1/2kx^2 (1.9)(9.8)(.77) = (.5)(1510)x^2 x = 0.138m But it's not the correct answer. What am I doing wrong?