Average Normal Strain in Wires | Rigid Lever Rotates 2° About Pin B | Mechanics of Materials

In this video, we solve a mechanics of materials problem where a rigid lever rotates clockwise by 2 degrees about pin B due to an applied force at the handle. The wires attached to the lever are initially unstretched when the lever is horizontal. We determine: • Change in length of each wire • Geometry relationships from small angle rotation • Average normal strain in each wire • How rotation affects axial deformation • Proper use of strain formula ε = ΔL / L This example combines concepts from: Engineering Mechanics Mechanics of Materials Axial Deformation Small Angle Approximation Strain Analysis Rigid Body Rotation Trigonometry in Engineering This is a common exam-style problem seen in: ✔ Statics ✔ Mechanics of Materials ✔ FE Exam preparation ✔ Mechanical Engineering courses Watch until the end for a clear step-by-step solution and free body insight. 👉 Become a member to help me create more high-quality tutorials:    / @mathphysicsengage