Page 29 - Dynamics of Mechanical Systems

0593_C01_fm Page 10 Monday, May 6, 2002 1:43 PM

10 Dynamics of Mechanical Systems

TABLE 1.7.1 (CONTINUED)
Conversion Factors between English and International Unit Systems
To Convert Multiply by
from to
Length ft m 3.048 000 × 10 –1
ft cm 3.048 000 × 10 1
ft in. 1.200 000 × 10 1
*
*
in. m 2.540 000 × 10 –2
*
in. cm 2.540 000 × 10 0
in. ft 8.333 333 × 10 –2
m ft 3.280 839 × 10 0
m in. 3.937 008 × 10 1
m cm 1.000 000 × 10 2
*
cm ft 3.280 840 × 10 –2
cm in. 3.937 008 × 10 –1
cm m 1.000 000 × 10 –2
mi ft 5.280 000 × 10 3
*
mi km 1.609 344 × 10 0
km mi 6.213 712 × 10 –1
Mass slug kg 1.459 390 × 10 1
kg slug 6.852 178 × 10 –2
Mass density slug/ft 3 kg/m 3 5.153 788 × 10 2
slug/ft 3 g/cm 3 5.153 788 × 10 –1
kg/m 3 slug/ft 3 1.940 320 × 10 –3
*
kg/m 3 g/cm 3 1.000 000 × 10 –3
g/cm 3 slug/ft 3 1.940 320 × 10 0
*
g/cm 3 kg/m 3 1.000 000 × 10 3
Moment or torque ft lb Nm 1.355 818 × 10 0
ft lb in. lb 1.200 000 × 10 1
*
in. lb Nm 1.129 848 × 10 –1
in. lb ft lb 8.333 333 × 10 –2
Nm ft lb 7.375 621 × 10 –1
Nm in. lb 8.850 745 × 10 0
Moments and products of inertia slug ft 2 kg m 2 1.355 818 × 10 0
kg m 2 slug ft 2 7.375 623 × 10 –1
Power or energy/work rate ft lb/sec HP 1.818 182 × 10 –3
ft lb/sec Nm/sec (or W) 1.355 818 × 10 0
ft lb/min HP 3.030 303 × 10 –5
ft lb/min Nm/sec (or W) 2.259 697 × 10 –2
HP Nm/sec (or W) 7.456 999 × 10 2
HP ft lb/sec 7.375 621 × 10 –1
HP ft lb/min 4.425 373 × 10 1
Nm/sec (or W) ft lb/sec 1.341 022 × 10 –3
Nm/sec (or W) ft lb/min 5.500 000 × 10 2
*
Nm/sec (or W) HP 3.300 000 × 10 4
*
2
Pressure or stress lb/in. (or psi) N/m (or Pa) 6.894 757 × 10 3
2
2
lb/in. (or psi) lb/ft 2 1.440 000 × 10 2
*
2
lb/ft 2 N/m (or Pa) 4.788 026 × 10 1
2
lb/ft 2 lb/in. (or psi) 6.944 444 × 10 –3
2
N/m (or Pa) lb/in. (or psi) 1.450 377 × 10 –4
2
N/m (or Pa) lb/ft 2 2.088 543 × 10 –2
2
*
Velocity ft/sec m/sec 3.048 000 × 10 –1
ft/sec cm/sec 3.048 000 × 10 1
*
*
ft/sec km/hr 1.097 280 × 10 0
*
ft/sec in./sec 1.200 000 × 10 1
ft/sec mi/hr (or mph) 6.818 182 × 10 –1
*
in./sec m/sec 2.540 000 × 10 –2
*
in./sec cm/sec 2.540 000 × 10 0
*
in./sec km/hr 9.144 000 × 10 –2