Question

The equipment shown below was used to investigate the behaviour of a spring. The extension of the spring can be worked out by measuring its __________ when different forces are applied. What one word completes the sentence?

Answer 1

length

Step-by-step explanation:

(specifically, you measure the extension: the difference between the original length and the extended weight)

this is because of Hooke's Law (the extension is proportional to the force)

[original length - stretched length]