### Teachings

Select Academic Year:     2017/2018 2018/2019 2019/2020 2020/2021 2021/2022 2022/2023
Professor
GIORGIO CONCAS (Tit.)
Period
First Semester
Teaching style
Convenzionale
Lingua Insegnamento
ITALIANO

Informazioni aggiuntive

Course Curriculum CFU Length(h)
[70/75]  BIOMEDICAL ENGINEERING [75/00 - Ord. 2017]  PERCORSO COMUNE 8 80

### Objectives

Expected outcomes.
1) (Knowledge and understanding). Knowledge of the basic principles of Mechanics and Thermodynamics and understanding of the related physical problems, with particular emphasis to those typical of Engineering.
2) (Applying knowledge and understanding). Capability of applying the acquired knowledge for solving quantitative elementary problems of Mechanics and Thermodynamics.
3) (Making judgements). Capability of selecting relevant information of a problem and of introducing suitable simplifications.
4) (Communication skills). Capability of describing topics of Mechanics and Thermodynamics through the use of a correct terminology.
5) (Learning skills). Physical/mathematical conceptual skills necessary to deal with more advanced courses of Applied Physics and Engineering with a good degree of autonomy.

### Prerequisites

Prerequisite skills and knowledge are those foreseen for the access test to the first year.

### Contents

1 - Basic notions
Physical quantities. International system of units (SI). Length, time, mass. Dimensional analysis
2 - Kinematics
Motion. Position and displacement. Average velocity and average speed. Instantaneous velocity. Acceleration. Motion with constant acceleration. Free-fall acceleration. Bidimensional motion. Projectile motion. Uniform circular motion: angular velocity, centripetal acceleration. Relative motion in two dimensions.
3 - Dynamics
Newton’s first law. Force. Mass. Newton’s second law. Some particular forces. Newton’s third law. Friction. Properties of friction. The drag force and terminal speed. Dynamics of uniform circular motion. Kinetics energy. Work. Work and kinetic energy. Work done by the gravitational force. Work done by a general variable force. Work done by a spring force. Power. Conservative forces and potential energy. Conservation of mechanical energy. Potential energy curves.Energy conservation. Centre of mass. Newton’s second law for a system of particles. Linear momentum. Linear momentum of a system of particles. Conservation of linear momentum. Systems with varying mass. Collision, impulse and linear momentum. Momentum and kinetic energy in collisions. Inelastic and elastic collisions.
4 - Rotational dynamics
Rotational variables and vectors. Rotation with constant angular acceleration. Kinetic energy of rotation. Rotational inertia. Newton’s second law for rotation. Work and rotational kinetic energy. Rolling. Angular momentum. Newton’s second law in angular form. Angular momentum of a system of particles. Angular momentum of a rigid body rotating about a fixed axis. Conservation of angular momentum. Requirements of equilibrium. Centre of gravity.
5 - Oscillations
Oscillations. Simple harmonic motion. Energetics of harmonic motions. Simple pendulum. Physical pendulum. Damped simple harmonic motion. Forced oscillations and resonance.
6 - Waves
Transverse and longitudinal waves. Wavelength and frequency. Speed of a traveling wave. Wave speed on a stretched string. Energy and power of a wave traveling along a string. Principle of superposition for waves. Standing waves.Standing waves and resonance. Sound waves. Speed of sound. Interference. Intensity and sound level. Beats. Basic notions on complex waves. Doppler effect.
7 - Thermodynamics
Zeroth law of thermodynamics. Measuring temperature. Thermometric scales. Thermal expansion. Temperature and heat. Absorption of heat by solids and liquids. Heat and work. First law of thermodynamics. Some special cases of the first law of thermodynamics. Heat transfer mechanisms. Ideal gases. Pressure, temperature, and RMS speed. Molar specific heats of an ideal gas. Degrees of freedom and molar specific heats. Adiabatic expansion of an ideal gas.Carnot’s cycle. Irreversible and reversible processes. Entropy and second law of thermodynamics. Engines and refrigerators

### Teaching Methods

Lectures: 64 hours; Tutorial and exercises: 16 hours

To be defined.

### Texts

Main:
Halliday, Resnick, Walker, Fondamenti di Fisica (Meccanica-Onde-Termodinamica), CEA.
Complementary:
Mazzoldi, Nigro, Voci, Elementi di Fisica I, Edises.