RATIONAL MECHANICS

Course objectives

The course is a logical-deductive rational treatment of the phenomena of mechanics,thus propaedeutic to the professional courses of the following years. The course yes aims to introduce the student to mechanics, understood as that part of physics which,through the constitution of logical schemes based on mathematics, formulates and analyzes models that identify the state of rest and describe the motion of rigid systems and systems with a finite number of degrees of freedom. At the end of the course, the student knows the results of classical mechanics and the basic notions of analytical mechanics. He is able to use this knowledge to study the motion and equilibrium of systems of rigid bodies.

Channel 1
Maurizio Pizzorusso Lecturers' profile

Program - Frequency - Exams

Course program
Introduction to the course: particle kinematics, moving frame, plane motion in polar coordinates, angular velocity, Poisson formulas. Rigid motion: theory and exercises. Euler's theorem. Center of instantaneous rotation, scalar invariant, classification of constraints, free coordinates and degrees of freedom, disk rolling on a fixed guide. Theory: relative motions. Galileo's theorem (composition of velocities), Coriolis's theorem (composition of accelerations), Einstein's elevator. Principles of Mechanics. Examples of forces (e.g., positional, dissipative, etc., active and reactive forces), Coulomb-Morin law, apparent forces. Mechanical quantities (momentum, momentum, kinetic energy) for systems of particle points. Center of gravity, theorem of motion of the center of gravity. First Cardinal Equation, Second Cardinal Equation. Work, potential, and power: exact differentials. Kinetic Energy Theorem, Work Theorem. Conservation of Mechanical Energy, Momentum, and Angular Momentum: First Integrals. Rigid Body: Inertia Tensor, Principal Axes of Inertia, Steiner's Theorem. Momentum and Angular Momentum for the RC. Kinetic Energy and Power for the RC. Constraints and Reactions. The Case of Rolling Friction and Pure Rolling. Cardinal Equations and First Integrals for Constrained Systems. Introduction to Analytical Mechanics. Symbolic Equation of Dynamics. Analytical Statics: The Principle of Virtual Work. Toward the Lagrangian Formulation of Mechanics: From the Symbolic Equation to Lagrange's Equations in Non-Conservative Form. Lagrangian and Lagrange Equations. Conservation Theorems in the Lagrangian Formalism. Noether's Theorem: Symmetries and First Integrals. Qualitative analysis of one-dimensional conservative systems, equilibrium stability of conservative holonomic systems, Lyapunov and Dirichlet-Lagrange theorems. Theory of small oscillations, Lagrangian of small oscillations, stability through study of the eigenvalues ​​of the relevant dynamical systems.
Prerequisites
Knowledge of Mathematical Analysis I-Mathematical Analysis II Geometry I-Physics I.
Books
E, Cirillo Notes from the Lessons of Rational Mechanics - Ed. CompoMat 2018 Stefano Turzi Notes on rational mechanics provided in the relevant classroom RATIONAL MECHANICS 2025
Frequency
Recommended although not mandatory given the nature of the course which requires constant interaction between theory and applications.
Exam mode
The exam consists of a written test concerning the topics covered in the course and structured in such a way as to verify the knowledge acquired in order to solve problems. There are also theoretical questions aimed at verifying the mastery of the acquired theoretical knowledge.
Lesson mode
Lectures and exercises.
  • Lesson code1003305
  • Academic year2025/2026
  • CourseMechanical Engineering for the Green Transition
  • CurriculumSingle curriculum
  • Year2nd year
  • Semester1st semester
  • SSDMAT/07
  • CFU6