Bending stresses in beams - Problem 28 | Bending Stresses | Strength of Materials..

Question i) Calculate the dimensions of the strongest section that can be cut out of a circular log of wood 25 cm in diameter. ii) Also specify the safe maximum span for the beam of rectangular section when it is to carry a UDL of 2.5 kN/m and bending stresses are limited to 10 MN/m². iii) What will be the longest span if the circular log itself is used as a beam? In this video, we solve an important Strength of Materials problem on beams and bending stresses. A circular log of diameter 25 cm is given, and we are tasked with finding the strongest rectangular section that can be cut from it. We also calculate the safe maximum span for the rectangular beam carrying a uniformly distributed load (UDL) and compare it with the span if the circular section itself is used as a beam. This step-by-step solution covers: Strongest section derivation from a circular log Safe span calculation under UDL Bending stress limitations and design approach Perfect for students preparing for university entrance exams, mechanical engineering, civil engineering, and competitive exams. 00:00 Introduction 02:10 Problem explanation 06:40 Deriving strongest rectangular section 11:30 Safe maximum span for rectangular beam 16:45 Longest span using circular section 19:50 Final results and conclusion #StrengthOfMaterials #BendingStress #EngineeringMechanics #BeamAnalysis #CircularLogBeam #MechanicalEngineering #CivilEngineering #EngineeringStudents #StressAndStrain #EngineeringProblems #EngineeringAcademy #TutorJerryAcademy #StructuralAnalysis #EngineeringDesign #EngineeringExams Strength of Materials, bending stresses, strongest section from circular log, beam analysis, safe span of beam, uniformly distributed load, UDL on beam, structural engineering, mechanics of materials, engineering academy, tutor jerry academy, civil engineering beams, mechanical engineering beams, stress in beams, circular section beam