1.4 Q4 Choose one 10 points In 1678 English Physicist Robert Hooke published that "As the extension, so the force". He established that most solids behave (at times) with elastic properties; even very "inelastic" materials like steel will behave elastically under large loads. In short he resolved that Fs = -kx where: Fs is a "spring force" or "restoring force" (as the spring tries to return to its original or unloaded form) (Units: N) k is the "constant of elasticity" or basically number that describes how elastic or stretchy a material is. (units: N/m) x is the elongation or the deformation of the spring. Basically the difference in length of the spring when stretched from its unstretched length. (Units: m) The negative sign indicates that the Spring Force is in the direction opposite that of the displacement (elongation). Look at the values of displacement and applied force you found for question 3. Do your values match Hooke's equation? Yes No (you did something wrong. Go back and figure out what went wrong and try this question again!)