Find the force constant of the spring. Answer in units of N/m.

Question

The force required to stretch a Hooke’s-law spring varies from 0 N to 43.2 N as we stretch the spring by moving one end 14.4 cm from its unstressed position. Find the force constant of the spring. Answer in units of N/m.

Answer 1

By Hook's law:

F=kΔx

43.2=k(0.144)

k=43.2/0.144=300N/m