SG1107 Mechanics 7.5 credits


The course gives the basics of mechanics, for later use in courses in structural- and fluid mechanics. It focuses on statics and the dynamics of particles, as well as basic principles.

Offering and execution

Course offering missing for current semester as well as for previous and coming semesters

Course information

Content and learning outcomes

Course contents *

Vector algebra and dimensional methods, review.

Force and moment of force.

Systems of forces; couples, equipollent force systems.

Centre of mass, systems of particles, rigid bodies, compound bodies.

Equilibrium, conditions for equilibrium, 2D and 3D, friction.

Kinematics of particles, components of force and acceleration.

Work and energy; power and kinetic energy, conservative systems, energy conservation.

The moment equation;

Oscillations, free and forced, damped and undamped.

Intended learning outcomes *

The students should be able to, starting with a concrete mechanical problem, make idealizations, motivate and create a mathematical model, solve it using mathematical or numerical methods and finally critically scrutinize the result. Further the students should be able to differentiate between reality and theoretical model and understand the interaction between basic observations, model building, and axioms, postulates, laws and their consequences.

Measurable aims: After passing the course the students should be able to: Define the basic  concepts and quantities in mechanics and explain how they are related, e.g. velocity, acceleration, mass, time, force, and moment of force. Formulate the laws of motion and derive the connections between them, e.g. Newton’s laws for particles, inertial systems, laws about equilibrium of rigid bodies. Identify and define typical systems of forces and a manifold of more abstract mechanical quantities (center of mass, momentum, angular momentum, resultant force, impulse, angular impulse, work, kinetic and potential energy, conservative and non-conservative forces). Discuss central mechanical phenomena (such as free fall, free damped and undamped harmonic oscillation, forced oscillation, resonance, uniform circular motion, elastic and completely inelastic impact, etc). Prove abstract energy and momentum laws starting from Newton’s laws. Analyze given systems of forces, and simplify them as far as possible. Analyze given motions with suitable choice of coordinate systems (inertial systems).  Calculate forces and positions of equilibrium. Starting from Newton’s laws and kinematic and geometric relationships put down mathematical models for different types of particle motions and make calculations of this motion.

Course Disposition

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Literature and preparations

Specific prerequisites *

Physical Principles and Processes besides Mathematical methods II.

Recommended prerequisites

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N. Apazidis, Mekanik. Statik och partikeldynamik, Studentlitteratur, 2004.

Examination and completion

If the course is discontinued, students may request to be examined during the following two academic years.

Grading scale *

A, B, C, D, E, FX, F

Examination *

  • INL1 - Assignments, 1.5 credits, Grading scale: P, F
  • TEN1 - Examination, 1.5 credits, Grading scale: A, B, C, D, E, FX, F
  • TEN2 - Examination, 4.5 credits, Grading scale: A, B, C, D, E, FX, F

Based on recommendation from KTH’s coordinator for disabilities, the examiner will decide how to adapt an examination for students with documented disability.

The examiner may apply another examination format when re-examining individual students.

Other requirements for final grade *

Hand in assignments (INL1; 1,5 university credits), a theory exam (TEN1; 1,5 university credits) and a problem exam (TEN2; 4,5 university credits). The theory exam can be taken by passing two exams during the course.

Opportunity to complete the requirements via supplementary examination

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Opportunity to raise an approved grade via renewed examination

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Anders Eriksson

Ethical approach *

  • All members of a group are responsible for the group's work.
  • In any assessment, every student shall honestly disclose any help received and sources used.
  • In an oral assessment, every student shall be able to present and answer questions about the entire assignment and solution.

Further information

Course web

Further information about the course can be found on the Course web at the link below. Information on the Course web will later be moved to this site.

Course web SG1107

Offered by


Main field of study *


Education cycle *

First cycle

Add-on studies

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