Final answer:
According to Hooke's law, the force needed to stretch a spring is proportional to the amount the spring is stretched. When a force of 12 pounds is applied, the spring will stretch by 1.2 inches.
Step-by-step explanation:
According to Hooke's law, the force needed to stretch a spring is proportional to the amount the spring is stretched. We can use this relationship to find the amount the spring will stretch when a force of 12 pounds is applied.
We can set up a proportion using the given information:
5 pounds / 0.5 inches = 12 pounds / x inches
To solve for x, we can cross multiply and then divide:
x = (0.5 inches * 12 pounds) / 5 pounds
x = 1.2 inches
Therefore, the spring will stretch by 1.2 inches when a force of 12 pounds is applied.