If it takes 470 J of work to stretch a spring 7.4 cm, what is the spring constant?
E = (1/2) k X^2
E = 470 J
X = 0.074 m
k = 2E/X^2 = 1.717*10^5 N/m
or 1.717*10^3 N/cm
E = 470 J
X = 0.074 m
k = 2E/X^2 = 1.717*10^5 N/m
or 1.717*10^3 N/cm