| Acceleration |
 |
| Force |
F = AP |
| Friction |
Mf = W xf Note: Static (for breakaway) friction coefficient is greater than kinetic (or moving) friction coefficient. |
| Gravity |
g = 386.4 in. / SEC.2 (at sea level) |
| Horsepower |
HP = FU/550 = LP/1714 = TN/63,025 |
| Mass |
M = W/g or, at sea level, = W/3.32, or = W(grams)/980 or W/386.4
NOTE: Mass is constant regardless of altitude.
|
| Orifice Area |
See pressure drop |
| Pressure |
P = F/A (consistent units) |
| Pressure Drop |
For oil hydraulic systems, the following will approximatepressure drop thru "short orifice" (1/4 to 1/2-inch long-length not over 3 times diameter)
For specified pressure drop:
|
| Radian |
Arc (of circle) = length of radius (see velocity, angular)
In degrees = 380/2π = 180/π = 57.3° |
| Spring Rate |
 |
| Torque |
T = F x r = (HP x 63.025)/N = (CU. IN. / REV. x P)/2π |
| Velocity - Angular |
Radians/SEC. = (Degrees/SEC.)/57.3 |
| Velocity - Flow |
U = 0.321L/A |
