From extension to material properties
From extension to material properties
When a wire or rod is pulled by a tensile force FFF, it gets longer by an extension xxx. Extension is the increase in length, so x=final length−original lengthx = \text{final length} - \text{original length}x=final length−original length.
Step-by-step lessons on Edexcel AS Level Physics Stress, strain and Young modulus. Each one builds up to exam-style questions.