| A, B… |
points in space, curves, surfaces and
solids |
|
,
… |
matrices and operators |
| A, B… a, b… |
units |
|
,
…
,
… |
variables or modules of vectors |
|
,
…
,
… | vectors |
|
,
…
,
… | unit vectors |
|
|
scalar product of two vectors |
|
|
vector product of two vectors |
|
|
derivative of variable
with respect
to
|
|
,
… |
derivatives of variable
with respect
to time |
|
|
average value of variable
|
|
| acceleration |
|
|
acceleration vector |
|
|
normal (centripetal) acceleration |
|
|
tangential acceleration |
|
|
cartesian components of the acceleration |
|
|
drag coefficient |
| cm |
centimeter; also, center of mass |
|
|
moment arm of a force |
| e |
Euler's number (base of the natural
logarithms) |
|
|
kinetic energy |
|
|
mechanical energy |
|
,
|
normal and tangential unit vectors |
|
,
|
unit vectors in phase space |
|
| force |
|
|
elastic force |
|
|
frictional force |
|
|
weight (gravitational force) |
|
|
kinetic and static frictional forces |
|
|
normal and tangential components of the
force |
|
|
resisting force in a fluid |
|
|
acceleration of gravity |
|
|
hamiltonian function |
| i |
imaginary number
|
|
| impulse |
|
|
moments of inertia with respect to the z
axis and an axis through the center of mass |
|
|
cartesian unit vectors along the
,
and
axes |
|
|
jacobian matrix |
| J |
joule (SI unit of work and energy) |
|
|
elastic constant |
| kg |
kilogram (SI unit of mass) |
|
|
angular momentum |
|
|
effective length of a pendulum |
|
| mass |
| m |
meter (SI unit of length) |
|
|
force moment of a couple |
|
|
moment of a force about a point P |
| N |
newton (SI unit of force) |
|
|
normal force |
|
|
Reynolds number |
|
|
unit vector perpendicular to a plane |
|
|
quantity of motion (momentum) |
|
|
position vector |
|
|
radius of gyration |
|
|
curvature radius of a
trajectory |
|
|
cylindrical coordinates |
|
|
unit vectors in cylindrical coordinates |
|
|
position along the trajectory; also,
deformation of a spring |
|
|
second (SI unit of time) |
|
|
period in a uniform circular motion or an
oscillatory motion |
|
|
phase velocity |
|
|
potential energy |
|
|
elastic potential energy |
|
|
gravitational potential energy |
|
|
potential energy per unit mass |
|
| velocity |
|
|
velocity vector |
|
|
cartesian components of the velocity |
|
| work |
|
|
cartesian coordinates |
|
|
angular acceleration |
|
|
increase of variable
during an
interval of time |
|
|
displacement vector |
|
|
displacement along the trajectory |
|
|
coefficient of viscosity |
|
|
rotation angle of the normal and
tangential unit vectors |
|
|
eigenvalue of a matrix; also, Lagrange
multiplier |
|
|
coefficients of static and kinetic
friction |
|
|
ratio between the length of a
circumference and its diameter |
|
| density |
|
|
angular velocity |
|
|
angular frequency |
| ° |
degree (unit of angle) |
