29690 - Rational Mechanics T

Course Unit Page

Academic Year 2018/2019

Learning outcomes

Good operative knowledge of mathematical models especially in terms of energy balance for mechanical system with a finite number of state variables, with an eye to extensions to electrical and electro-mechanical systems.

Course contents

Elements of vector calculus.


Point kinematicsConstraints and holonomic systems. Rigid body kinematics. Euler's angles. Mozzi's theorem. Relative kinematics. Theorems of addition of velocities and accelerations. relative motion for rigid bodies. Rigid plane motion, instantaneous center of motion, polhode and hyperpolhode.

Geometry of mass distribution and dynamical quantities.

Center of mass and its properties. Moments of inertia. Huygens's theorem. Inertia matrix. Momentum. Angular momentum. Kinetic energy. Koenig's theorems. Kinetic energy for rigid bodies and for holonomic systems.


Point vectors. Newton's principles. Force law and examples. Weight. Work of a force system. Conservative force systems.

Statics and dynamics

Cardinal equations. Virtual displacements and virtual work. Principle of constraints forces. Theorem of kinetic energy. Theorem of conservation of mechanical energy.

Analytical mechanics

Symbolic relation of dynamics. Lagrange's equations. First integrals for lagrangian systems. Principle of virtual work. Equilibrium for a holonomic system. Stability of equilibrium. Qualitative analysis of motion: the method of Weierstrass. Small oscillation around a stable equilibrium point.


main textbook:

M. FABRIZIO, Elementi di Meccanica Classica, Zanichelli. Bologna

Solved problems:

A. MURACCHINI, T. RUGGERI, L. SECCIA, Esercizi e temi d'Esame di Meccanica Razionale, Progetto Leonardo, Bologna

F.BAMPI, M.BENATI, A.MORRO, Problemi di Meccanica Razionale, Ecig, Genova

Suggested reading:

P.BISCARI, T. RUGGERI, G. SACCOMANDI, M. VIANELLO, Meccanica razionale per l'ingegneria. Ed. Springer-Milano;

Teaching methods

Class lessons and exercise sessions. Homework problems are also assigned

Assessment methods

The exam consists in two wrtitten tests: one concerning applications and one concerning theory. Passing the applications test is a prerequisite for taking the theoretical test. The applications test is a problem about a system with at most two degrees of freedom.

The theoretical test consists in three questions.

Office hours

See the website of Carlo Alberto Bosello