The 4th answer choice is .0253

"If the following plot represents the displacement, x(cm), versus time, t(s), of a 0.1 kg mass connected to a spring. What is the spring constant of the spring? i(t) - k m x =0 x(t)- x (cm) 20- 10 15 20 25 30 45 10- -20 0.396 N/m 0.049 N/m 0,00064 N/m