Machinery's Handbook, 31st Edition
Velocity and Acceleration Conversion Factors 2873 Units of Velocity and Acceleration Table 54. Velocity Conversion Factors To Convert ↓ cm/sec m/sec km/hr ft/sec ft/min ft/hr knot a mile/hr cm/sec 1 0.01 0.036 0.032808 1.9685 118.110236 0.01944 0.02237 m/sec 100 1 3.6 3.2808 196.8504 11811.0236 1.94384 2.236936 km/hr 27.77778 0.27778 1 0.911344 54.6806 3280.8399 0.53995 0.621371 ft/sec 30.48 0.3048 1.09728 1 60 3600 0.59248 0.681818 ft/min 0.5080 0.00508 0.018288 0.016667 1 60 9.8 3 10 − 3 0.011364 ft/hr 0.008467 8.47 3 10 − 5 3.05 3 10 − 4 2.78 3 10 − 4 0.01666 1 1.6 3 10 − 4 1.89 3 10 − 4 knot 51.444 0.51444 1.852 1.687808 101.2686 6076.11549 1 1.15167 mile/hr 44.704 0.447040 1.609344 1.466667 88 5280 0.8689 1 a Knot means nautical miles per hour Figures in bold face indicate the conversion is exact Table 55. Acceleration Conversion Factors To Convert ↓ cm/sec 2 m/sec 2 km/hr 2 feet/sec 2 ft/hr 2 knot/sec miles/hr 2 cm/sec 2 1 0.01 129.6 0.0328 4.252 3 10 5 0.0194384 80.529 m/sec 2 100 1 12960 3.280 4.252 3 10 7 1.943844 8052.970 km/hr 2 0.007716 7.72 3 10 − 5 1 2.532 3 10 − 4 3280.84 0.0001499 0.6213 ft/sec 2 30.48 0.3048 3950.20 1 1.296 3 10 7 0.592483 2454.545 ft/hr 2 2.35 3 10 − 6 2.35 3 10 − 5 3.048 3 10 − 4 7.716 3 10 − 8 1 4.571 3 10 − 8 1.893 3 10 − 4 knot/sec 51.44444 0.514444 6667.2 1.687809 2.187 3 10 7 1 4142.8060 mile/hr 2 0.0124 0.000124 1.609 4.074 3 10 − 4 5280 0.00024138 1 Figures in bold face indicate the conversion is exact Units of Viscosity Table 56a. Oil Viscosity Conversion Factors To Convert ↓ Poise ( P ) Centi poise ( Z ) Reyn ( μ ) Stoke ( S ) Centistoke ( v ) Poise ( P ) cm dyne-s cm-s gram mass 2 = 1 100 1.45 3 10 − 5 1 ρ 100 ρ
cm dyne-s
100 cm-s grammass
0.01 ρ
1 ρ
Centipoise ( Z )
0.01
1
1.45 3 10 − 7
2 =
100
in lb force-s 2
6.9 10 6 # ρ
4
6.9 10
1
# ρ
Reyn ( μ )
6.9 3 10 4 6.9 3 10 6
s cm 2
1
100
Stoke ( S )
100 ρ
1.45 3 10 − 5 ρ
ρ
Centistoke ( v ) 100s cm 2
0.01
1
0.01 ρ
1.45 3 10 − 7 ρ
ρ
Table 56b. Additional Viscosity Conversion Factors
Multiply centipoise centistoke
By
To Obtain
Multiply
By
To Obtain
0.001
1000
pascal-second (Pa-s)
pascal-second pascal-second
centipoise
10
0.000001 meter 2 /second (m 2 /s)
poise
0.1 pascal-second (Pa-s)
poise
0.0001
meter 2 /second (m 2 /s)
stoke
ρ = Specific gravity of the oil. Figures in bold face indicate the conversion is exact
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