Calculate the spring constant.

Question

A spring has a natural length of 16.2cm and a measurement shows that it is stretched to a length of 21.6cm by a force of 12.4N. What is the value of the spring constant?

Answer 1

Spring force F = [-] k Δx, 12.4 N = k (0.216 - 0.162 m) = 0.054 k, k = 12.4 / 0.054 = 230. N/m.