Work and power
work (W) = power (F) x distance (s) [Nm]
1 Newtonmetre [Nm] = 1 Joule [J] = 1 watt-second [Ws]
More units for power:
| Newton [N] | Dyn [dyn] | Pond [p] | Kilopond [kp] | Poundal [pdl] | Pound-force [lbf] | |
| 1 N = | 1 | 100.000 | 101,97 | 0,1020 | 7,2330 | 0,2248 |
| 1 Dyn = | 1,0000·10-5 | 1 | 0,001020 | 1,0197·10-6 | 7,2330·10-5 | 2,2481·10-6 |
| 1 Pond = | 0,009807 | 980,67 | 1 | 0,001000 | 0,07093 | 0,002205 |
| 1 Kilopond = | 9,8067 | 980.665 | 1.000,00 | 1 | 70,9316 | 2,2046 |
| 1 Poundal = | 0,1383 | 13.826 | 14,0981 | 0,01410 | 1 | 0,03108 |
| 1 Pound-force = | 4,4482 | 444.822 | 453,59 | 0,4536 | 32,1740 | 1 |
| Type of mechanical work |
Calculation of work |
Application example |
| Aerial work |
= Weight force of load x lifting height |
hoist, pump |
| Acceleration work |
= Acceleration force x distance | airplace at takeoff |
| Turnery | = Operating torque x distance of the force |
crank assembly, rack giering |
| Friction work |
= Friction force x distance of friction |
brakes, weaving looms |
Power (P) = work (W) ÷ time (t) [Nm/s] or[Ws/s = W]
or
Power (P) = work (F x s) ÷ time (t) [Nm/s]
| Watt [W] | Volt Ampere [VA] | Kilowatt[kW] | Pferdestärke [PS] | horse power [hp] | |
| 1 Watt = | 1 | 1 | 0,001000 | 0,001360 | 0,001341 |
| 1 Volt Ampere = | 1 | 1 | 0,001000 | 0,001360 | 0,001341 |
| 1 Kilowatt = | 1.000 | 1.000 | 1 | 1,3596 | 1,3410 |
| 1 Pferdestärke = | 735,50 | 735,50 | 0,7355 | 1 | 0,9863 |
| 1 horsepower = | 745,70 | 745,70 | 0,7457 | 1,0139 | 1 |
Source: SI - Systeme