Introduction to Biomechanics

The fundamental relations of mechanics and biomechanics are presented, which are essential for any study of the dynamics of physical systems and their behaviors. Beginning with an examination of Newton’s Laws of Motion, the chapter lays the groundwork for understanding the behavior of objects in motion and the forces acting upon them. It introduces the basic concepts of forces and moments, emphasizing their significance in analyzing the dynamics of various systems. Vector algebra is briefly reviewed as an important tool for representing and manipulating forces in different directions, leading to discussions on equilibrium forces and gravitational forces. The concept of the center of gravity is then presented, highlighting its importance in understanding stability and balance in objects. Lastly, frictional and inertial forces are examined, explaining their roles in resisting motion and affecting the dynamics of systems. Kinematic equations are introduced to describe the motion of objects, including the basic equations of angular motion, which are very useful for describing the movements of limbs around a fixed joint.