Unit PHYSICS I
- Course
- Computer science and electronic engineering
- Study-unit Code
- A003200
- Curriculum
- In all curricula
- Teacher
- Francesco Cottone
- Teachers
-
- Francesco Cottone
- Hours
- 54 ore - Francesco Cottone
- CFU
- 6
- Course Regulation
- Coorte 2022
- Offered
- 2022/23
- Learning activities
- Base
- Area
- Fisica e chimica
- Academic discipline
- FIS/01
- Type of study-unit
- Obbligatorio (Required)
- Type of learning activities
- Attività formativa monodisciplinare
- Language of instruction
- Italian
- Contents
- Kinematics of a point particle. Dynamics of a point particle, of a system of particles and of a rigid body. Equilibrium of rigid bodies. Oscillations and waves. Gravitation. Elements of fluids mechanics. Brief survey on the two principles of thermodynamics.
- Reference texts
- David Halliday-Robert Resnick-Jearl Walker - Fondamenti di Fisica. Meccanica, Onde, Termodinamica. Settima edizione. Casa Editrice Ambrosiana. Zanichelli.
Mazzoldi-Nigro-Voci, Elementi di Fisica, Meccanica e termodinamica, EdiSes - Educational objectives
- Gaining an understanding of the theoretical and experimental principles underpinning classical mechanics. Ability to apply the theoretical knowledge to solve simple problems on the dynamics of the point particle, a system of point particles and a rigid body.
- Prerequisites
- The student must be familiar with the basic principles of operations with
vectors, trigonometry, differential and integral calculus. These contents are included within those studied during the courses of Geometry and Mathematics Analysis I. - Teaching methods
- Face to face lessons, including both theory and problem solving;
homework will be also proposed to the students. - Learning verification modality
- Written exam (2 hours) devoted to the solution of 3 simple exercises + second written exam (1 hour) devoted to three general questions to be answered in open form.
- Extended program
- 1. Introduction to the course.
Introduction of the course, What is physics, definition historical background. The Experimental Method. Classical and modern
hysics.
2. Physical quantities, measurements and vectors.
Physical quantities and the international system of units. Accuracy, significant figures and dimensional analysis. Powers of 10. The Universe by orders of magnitude.
3. Vectors and scalars.
Properties, modulus, direction and direction, main operations between vectors, addition, subtraction, scalar and vector product. Mixed products and demonstrations.
4. Kinematics
Motion in one dimension. Vector position, velocity and acceleration. One-dimensional kinematics, uniform rectilinear motion and uniformly accelerated motion.
5. Motion in multiple dimensions and relative motions.
Projectile motion, resistance of the medium (hint), curvilinear motion, uniform circular motion. Inertial systems, relative motion and Galileo transformations.
6. Forces and Newton's laws.
Historical background. Definition of force, mass and weight. Newton's laws. Fundamental interactions in nature. Frictional forces, gravitational force, electric and magnetic forces, tensions. Time-dependent forces. Vector form of Newton's laws in 3 dimensions. Applications of Newton's laws: one-dimensional motion, dynamics of uniform circular motion, harmonic oscillatory motion. Hooke's law. Non-inertial reference systems and fictitious forces.
7. Work and mechanical energy.
Work of a force. Conservative forces and potential energy. Kinetic energy theorem. Conservation of total mechanical energy. Work of nonconservative forces.
8. Systems of particles.
The motion of a system of particles. Systems of two particles and several particles. Center of mass si a finite system of particles and a solid body. Conservation of momentum for a system of particles and Newton's laws. Kinetic energy and König's theorem.
9. Collisions between particles.
Definition of collision between two bodies. Impulse. Conservation of momentum and energy. Elastic and inelastic impacts. Coefficient of restitution. Central impacts between two bodies. Impacts in 2 dimensions.
10. Kinematics and dynamics of rotary motions.
Rotational motion. Rotational vector variables. Relations between linear and angular variables. Angular momentum of a particle. Systems of particles. Angular momentum and angular velocities. Conservation of angular momentum. Torque moment of a particle. Moment of inertia of a particle system and extended body. Torque moment due to gravity. Dynamics of rigid bodies with a fixed axis. Roto-translational motions. Examples of spinning top and gyroscope. Kinetic energy of a body in rotation and translation.
11. Fluid mechanics.
States of matter. Fluid statics: pressure in a fluid. Pascal's principle and Stevin's law. Archimedes' principle. Examples and applications of hydrostatics. Fluid dynamics, generalities. Ideal fluids: the equations of motion. Equations of continuity. Stationary flow, Bernoulli's theorem. Applications on stationary fluids. Notes on real fluid dynamics: viscosity, laminar motion and Poiseuille's law, Reynolds number. Motion in a fluid, resistance of the medium.