Define an angle between the force and any coordinate axis, provided the angle is <=90. Use the cosine
and sine to find the force components on the nearest axis. If any of these component lies in a negative
coordinate add a - sign. Please consider the belo
Designation: C128 12
Standard Test Method for
Density, Relative Density (Specific Gravity), and Absorption
of Fine Aggregate1
This standard is issued under the fixed designation C128; the number immediately following the designation indicates the year of
Designation: C39/C39M 14a
Standard Test Method for
Compressive Strength of Cylindrical Concrete Specimens1
This standard is issued under the fixed designation C39/C39M; the number immediately following the designation indicates the year of
original adopti
Designation: C150/C150M 12
Standard Specification for
Portland Cement1
This standard is issued under the fixed designation C150/C150M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, th
Designation: C143/C143M 12
Standard Test Method for
Slump of Hydraulic-Cement Concrete1
This standard is issued under the fixed designation C143/C143M; the number immediately following the designation indicates the year
of original adoption or, in the cas
Designation: C127 12
Standard Test Method for
Density, Relative Density (Specific Gravity), and Absorption
of Coarse Aggregate1
This standard is issued under the fixed designation C127; the number immediately following the designation indicates the year o
Designation: C 109/C 109M 071
Compressive Strength of Hydraulic Cement Mortars (Using
2-in. or [50-mm] Cube Specimens)1
This standard is issued under the fixed designation C 109/C 109M; the number immediately following the designation indicates the year
o
Angles needs to be measured from a positive axis going toward the other
positive axis until we reach the vector.
Examples:
Z+
Wrong as here we are
moving toward the z-
X+
X-
ZZ-
Wrong as here we are
moving toward the z-
X+
No back to the problem we tried
MENG 2230
STATICS
Dr. Fadi Alsaleem
Lecture 2
The slides are adapted from the text book, Vector mechanics for engineers
Expressing a Vector in 3-D Space
If the direction cosines are given:
With the angles between F and the axes,
Fx F cos x Fy F cos y Fz
MENG 2230
STATICS
Dr. Fadi Alsaleem
The slides are adapted from the text book, Vector mechanics for engineers
What is Mechanics?
Mechanics is the study of bodies under the action of forces.
Categories of Mechanics:
- Rigid bodies
- Statics bodies at res
MENG 2230
STATICS
Dr. Fadi Alsaleem
Lecture 2
The slides are adapted from the text book, Vector mechanics for engineers
Check this .
http:/www.physicsclassroom.com/Physics-Interactives/Vectors-andProjectiles/Vector-Addition/Vector-Addition-Interactive
2-2
Designation: C192/C192M 14
Standard Practice for
Making and Curing Concrete Test Specimens in the
Laboratory1
This standard is issued under the fixed designation C192/C192M; the number immediately following the designation indicates the year
of original a