|
Fundamental Units |
Table of Units |
| Units
Systems | Mass
M | Length
L | Time
T | Velocity
v = L / T | Acceleration
a = v / t = L / T 2 | Force
F = M a | Work
W = F s | Power
P = W / t | Pressure
P = F / A | Temp.
T | Heat
Q = Mc(ΔT) |
| Metric
Consistent (SI) | 1 kg | 1 m | 1 s | 1 m/s | 1 m/s2 | 1kgm/s2 = 1N
1 Newton | 1
Nm = 1 J
= 1 Joule | 1
J/s = 1W
= 1 Watt | 1
N/m2
=1 Pa (Pascal) | 1 ºC | 1
kcalorie
(1 kcal) |
| Metric
Gravitational | 1 kg | 1 m | 1 s | 1 m/s | 9.8 m/s2=1g | 9.8kgm/s2=
1 kgf = 9.8N | 1 kgfm | 1 kgfm/s | 1 kgf/m2 | 1 °C | 1 kcal |
| American Consistent | 1 slug | 1 ft | 1 s | 1 ft/s | 1 ft/s2 | 1 slug
ft/s2=
1 lbf | 1 lbf ft | 1 lbf ft/s | 1 lbf/ft2 | 1 °F | 32 Btu
|
| American
Gravitational | 1lbm=
(1/32)slug | 1 ft | 1 s | 1 ft/s | 32 ft/s2=1g | (1/32slug)*32ft/s2
=1 lbf | 1 lbf ft | 1 lbf ft/s | 1 lbf/ft2 | 1 °F | 1 Btu = 1British thermal unit |
| Conversions | Usual Pressure Units | Atmospheric Pressure | Density of Water |
| 1 lbm = 0.454 kg | lbf / in2 or (psi) | = 1.0 kgf / cm2 | = 1 gr/ cm3 = 1 gr / mL |
| 1 ft = 0.3048 m | kgf / cm2 | = 1.0 x 105 Pascal | = 1000gr / 1000cm3 = 1 kg / L |
| 1 ° F = (5/9) °C | 106 Pa = MPa | = 14.7 psi | = 1000kg / 1000L = 1 ton / m3 |