|
No |
항 목 |
SI Unit |
English Unit※
(symbol) |
|
Unit |
Symbol |
|
1 |
Mass |
kilogram |
kg |
lbf-sec²/in |
|
2 |
Length |
meter |
m |
in. |
|
3 |
Time |
second |
s |
sec |
|
4 |
Force |
Newton=kg·m/s² |
N |
lbf |
|
5 |
Stress or pressure or elastic modulus |
Pascal = N/m² |
Pa |
lbf/in²=psi |
|
6 |
Moment of a force |
Newton meter=kg·m²/s² |
N·m |
in.-lbf |
|
7 |
Work or energy |
Joule = N·m |
J |
in.-lbf |
|
8 |
Power |
Watt = J/s |
W |
in.-lbf/sec |
|
9 |
Frequency |
Hertz = 1/s |
Hz |
Hz |
|
10 |
Mass density |
kilogram per cubic meter |
kg/m³ |
lbf-sec²/in⁴ |
|
11 |
Velocity or speed |
meter per second |
m/s |
in./sec |
|
12 |
Acceleration |
meter per second squared |
m/s² |
in./sec² |
|
13 |
Angular displacement or plane angle |
radian |
rad |
rad |
|
14 |
Angular velocity |
radian per second |
rad/s |
rad/sec |
|
15 |
Angular acceleration |
radian per second squared |
rad/s² |
rad/sec² |
|
16 |
Area moment of inertia |
(meter)⁴ |
m⁴ |
in⁴ |
|
17 |
Mass moment of inertia |
kilogram meter squared |
kg·m² |
in.-lbf-sec² |
|
18 |
Stiffness coefficient : |
|
Rectilinear (translational) |
Newton per meter |
N/m |
lbf/in. |
|
Rotational(torsional) |
Newton meter per radian |
N·m/rad |
lbf-in./rad |
|
19 |
Damping coefficient : |
|
Rectilinear (translational) |
Newton second per meter |
N·s/m |
lbf-sec/in. |
|
Rotational (torsional) |
Newton meter second per radian |
N·m·s/rad |
lbf-in.-sec/rad |
|
20 |
Mass : |
|
Rectilinear (translational) |
kilogram |
kg |
lbf-sec²/in. |
|
Rotational (torsional) |
kilogram meter squared |
kg·m² |
lbf-sec²/in. |
|
※ ft(foot) can be interchanged with in.(inch) |