# Physics I

lepl1201  2022-2023  Louvain-la-Neuve

Physics I
5.00 credits
30.0 h + 30.0 h
Q1
Language
French
Main themes
The course is structured in two parts. The first addresses point mass mechanics, and the second electrostatics. The second part concludes with some elements introductory to the theory of electrical circuits. Both components of the course share a common conceptual framework, in which basic physics concepts are introduced in a unified approach (forces, potential and mechanical energies, conservation equations). The first part introduces the concepts of geometry and vector spaces necessary to express the notions of forces and torques, and in particular the conditions of static equilibrium. Next, the concepts and tools of kinematics are developed, leading to Newton's principles, their physical meaning and consequences. Finally, based on these principles, the conservation laws of linear momentum and energy are established, by also discussing their physical significance. The second part introduces the main quantities and laws relevant to electrostatics in vacuum, exploiting the physics concepts of the first part of the course. The generalisation of these laws to dielectric media is developed. Conducting materials are considered, leading to the concept of electrical resistance. Then follows an introduction to the basics of the theory of electrical circuits (Ohm's and Kirchhoff's laws, electrical capacitance and inductance).
Learning outcomes
 At the end of this learning unit, the student is able to : 1 Contribution of the course to the program objectives:Regarding the learning outcomes of the program of Bachelor in Engineering, this course contributes to the development and the acquisition of the following learning outcomes: LO 1.1LO 2.3, 2.4, 2.6, 2.7LO 3.1, 3.2, 3.3LO 4.2, 4.3, 4.4 Specific learning outcomes of the course:More precisely, at the end of the course the students will be able to  Apply Newton's principles in order to either express the differential equations of a system dynamics, or determine unknown forces acting on it ; implement the time evolution equations of global quantities relevant to a system of point masses subjected to an ensemble of external and internal forces (kinetic, potential and mechanical energy, momentum) ; - Evaluate the electric field associated to an electric charge distribution, and use Gauss' law to determine electric field distributions within simple devices in vacuum and materials ; - By relying on Ohm's and Kirchhoff's laws, compute and measure the continuous electrical characteristics of simple passive and dynamical circuits.
Content
The basic elements of mechanics and electricity will be covered in this course by first establishing strong connections between common concepts such as
units, vectors, force, moment, energy, power
Other concepts covered specifically in mechanics and electricity include
Point mechanics - kinematics - Newton's principles - bases of gravitation - forces of friction - static equilibrium - simple problems of dynamics - Principles of conservation - basics on rigid bodies - Torques - rotating movements
Electrostatics in vacuum and in matter - Electric field and potential - Electric dipoles - Ohm's and Kirchhoff's laws - Elements of electrical circuits
The methods used will favor active learning from the students. The precise methods of implementing an active participation of the student in his learning are left to the teachers, in compliance with the educational orientations of the Faculty.
Teaching methods
The theoretical notions of mechanics and electricity covered in this course are seen during lectures, emphasizing the physical understanding of the phenomena. Importance is given to respecting a coherent formalism throughout the course and to linking the common concepts used in mechanics and electricity. The amount of material is limited in terms of knowledge, but learning requires a thorough mastery of theoretical concepts. This mastery can be acquired by solving many exercises, avoiding falling into the trap of applying ready-made recipes. Tutored practice sessions are held weekly to frame this important part of learning and find answers to comprehension questions from tutors. Two labs are also performed. The material is that covered during the lectures, with summary notes provided by the teachers which outline the important elements. Students can also refer to Young & Freedman's book as an additional resource for additional explanations and sometimes slightly different paths of presentation.
Evaluation methods
Students are assessed individually:
- on an continuous basis: written preparatory work is requested for each of the two labs;
- during the session: a written exam takes place on the basis of the specific objectives announced previously. More details are provided on the course website.
Faculty or entity

#### Programmes / formations proposant cette unité d'enseignement (UE)

Title of the programme
Sigle
Credits
Prerequisites
Learning outcomes
Bachelor in Engineering

Bachelor in Engineering : Architecture