He stated his observation as "Ut tensio, sic vis" - - As the extension, so is the force. This linear elastic response has been formalized into the stress/strain relationship known as Hooke's Law: ...

Record each stretching force in N and the corresponding length of the spring. The extension is the new length minus the unloaded length. Figure caption, Graph showing Hooke's Law, force is plotted ...

Save guides, add subjects and pick up where you left off with your BBC account. The main variables in a science experiment are the independent variable, the dependent variable and the control ...