2General introduction about forces

University of Babylon
College of Engineering
Department of Architectural Engineering
Lectures of
Structure I
? Instructor: Dr. Majid Mohammed Ali
? E-mail :eng.majid.mohammed@uobabylon.edu.iq
? 2 hours per week
? Conduct
Quizzes, homework and project Mid-term exam Final exam
10% 30% 60%

? Content of the term
General introduction about forces, their kinds and affects 1 week
Resultant of forces 3 weeks
The couple 1 week
Equilibrium 4 weeks
Analysis of truss 3 weeks
Drawings of axial, shear forces ,and bending moments 3 weeks

? References:
Higdon, and W. Stiles ," Engineering Mechanics", 3rd edition, prentice Hall of India, New Delhi ,1974
Hibbeler," Engineering Mechanics-Static", 12rd edition, Mc Grew Hill ,2008
Meriam, J. L., Kraige, L. G. " Engineering Mechanics-Static", 2008
Introduction
Mechanics - the physical science which describes or predicts the conditions of rest or motion of bodies under the action of forces.
Scalars and vectors
Scalar - A mathematical quantity possessing magnitude only (mass, volume, time … etc.)
Vector - A mathematical quantity possessing magnitude and direction (force, displacement, velocity … etc.)
Force
The action of a body on another body which changes or tempts to change the motion of the body acted on.
Elements of a Force
Given a single force, one is interested in knowing all of the
following:
1. Magnitude
2. Direction which defines by sign or slope
3. Line (point) of Action