Hooke's Law

Description

Mr Shiraz Sabah provides his expert insights and discusses a common school physics experiment that involves measuring the stretch of a spring when different weights are applied to it, illustrating the principles of Hooke's law. Hooke's law states that force is proportional to the spring's stiffness times its extension. Mr Sabah further introduces Young's modulus, an extension of Hooke's law that considers the force relative to the cross-sectional area of a material, thereby introducing a two-dimensional analysis. He notes that stiffer materials exhibit higher Young's modulus values, while stretchier materials have lower values. Specific materials are compared based on their stiffness, with cobalt chromium identified as the stiffest, followed by titanium, cortical bone, cancellous bone, and biceps tendon.

DOI: 10.1302/3114-251252