The newton-meter (Nm) is a fascinating unit of measurement that quantifies torque, which is the rotational equivalent of linear force. Named after Sir Isaac Newton, the brilliant mind who laid the groundwork for classical mechanics, this unit plays a crucial role in understanding how forces cause objects to rotate. What many might find intriguing is the dual nature of the newton-meter: while commonly associated with torque, it is also equivalent to a joule, the standard unit of energy in the International System of Units, when measuring work or energy. This duality showcases the interconnectedness of physical concepts, demonstrating how force and motion unite in both rotational and energy contexts to describe the physical world.
The pound-foot is a unit of torque that embodies the long-standing relationship between imperial units and engineering. First defined, the pound-foot describes the moment of force exerted when one pound of force is applied to a one-foot lever. While its metric counterpart, the newton-meter, is widely used, the pound-foot remains prevalent in industries like automotive engineering where torque specifications are crucial.
Interestingly, in the 19th-century steam era, torque measurement in pound-feet was fundamental for evaluating the power of steam engines, essentially helping to drive the Industrial Revolution. Confusion might arise between pound-foot and foot-pound, but the latter relates to work or energy, not torque. This subtle distinction underscores the nuanced but influential role of the pound-foot in engineering history.
Newton-meters | Pound-feet |
---|---|
0
Nm
|
0
lbf-ft
|
10
Nm
|
7.37562
lbf-ft
|
20
Nm
|
14.75124
lbf-ft
|
30
Nm
|
22.12686
lbf-ft
|
40
Nm
|
29.50248
lbf-ft
|
50
Nm
|
36.87811
lbf-ft
|
60
Nm
|
44.25373
lbf-ft
|
70
Nm
|
51.62935
lbf-ft
|
80
Nm
|
59.00497
lbf-ft
|
90
Nm
|
66.38059
lbf-ft
|
100
Nm
|
73.75621
lbf-ft
|
110
Nm
|
81.13183
lbf-ft
|
120
Nm
|
88.50745
lbf-ft
|
130
Nm
|
95.88308
lbf-ft
|
140
Nm
|
103.2587
lbf-ft
|
150
Nm
|
110.63432
lbf-ft
|
160
Nm
|
118.00994
lbf-ft
|
170
Nm
|
125.38556
lbf-ft
|
180
Nm
|
132.76118
lbf-ft
|
190
Nm
|
140.1368
lbf-ft
|
200
Nm
|
147.51242
lbf-ft
|
210
Nm
|
154.88805
lbf-ft
|
220
Nm
|
162.26367
lbf-ft
|
230
Nm
|
169.63929
lbf-ft
|
240
Nm
|
177.01491
lbf-ft
|
250
Nm
|
184.39053
lbf-ft
|
260
Nm
|
191.76615
lbf-ft
|
270
Nm
|
199.14177
lbf-ft
|
280
Nm
|
206.51739
lbf-ft
|
290
Nm
|
213.89302
lbf-ft
|
300
Nm
|
221.26864
lbf-ft
|
310
Nm
|
228.64426
lbf-ft
|
320
Nm
|
236.01988
lbf-ft
|
330
Nm
|
243.3955
lbf-ft
|
340
Nm
|
250.77112
lbf-ft
|
350
Nm
|
258.14674
lbf-ft
|
360
Nm
|
265.52236
lbf-ft
|
370
Nm
|
272.89798
lbf-ft
|
380
Nm
|
280.27361
lbf-ft
|
390
Nm
|
287.64923
lbf-ft
|
400
Nm
|
295.02485
lbf-ft
|
410
Nm
|
302.40047
lbf-ft
|
420
Nm
|
309.77609
lbf-ft
|
430
Nm
|
317.15171
lbf-ft
|
440
Nm
|
324.52733
lbf-ft
|
450
Nm
|
331.90295
lbf-ft
|
460
Nm
|
339.27858
lbf-ft
|
470
Nm
|
346.6542
lbf-ft
|
480
Nm
|
354.02982
lbf-ft
|
490
Nm
|
361.40544
lbf-ft
|
500
Nm
|
368.78106
lbf-ft
|
510
Nm
|
376.15668
lbf-ft
|
520
Nm
|
383.5323
lbf-ft
|
530
Nm
|
390.90792
lbf-ft
|
540
Nm
|
398.28355
lbf-ft
|
550
Nm
|
405.65917
lbf-ft
|
560
Nm
|
413.03479
lbf-ft
|
570
Nm
|
420.41041
lbf-ft
|
580
Nm
|
427.78603
lbf-ft
|
590
Nm
|
435.16165
lbf-ft
|
600
Nm
|
442.53727
lbf-ft
|
610
Nm
|
449.91289
lbf-ft
|
620
Nm
|
457.28852
lbf-ft
|
630
Nm
|
464.66414
lbf-ft
|
640
Nm
|
472.03976
lbf-ft
|
650
Nm
|
479.41538
lbf-ft
|
660
Nm
|
486.791
lbf-ft
|
670
Nm
|
494.16662
lbf-ft
|
680
Nm
|
501.54224
lbf-ft
|
690
Nm
|
508.91786
lbf-ft
|
700
Nm
|
516.29348
lbf-ft
|
710
Nm
|
523.66911
lbf-ft
|
720
Nm
|
531.04473
lbf-ft
|
730
Nm
|
538.42035
lbf-ft
|
740
Nm
|
545.79597
lbf-ft
|
750
Nm
|
553.17159
lbf-ft
|
760
Nm
|
560.54721
lbf-ft
|
770
Nm
|
567.92283
lbf-ft
|
780
Nm
|
575.29845
lbf-ft
|
790
Nm
|
582.67408
lbf-ft
|
800
Nm
|
590.0497
lbf-ft
|
810
Nm
|
597.42532
lbf-ft
|
820
Nm
|
604.80094
lbf-ft
|
830
Nm
|
612.17656
lbf-ft
|
840
Nm
|
619.55218
lbf-ft
|
850
Nm
|
626.9278
lbf-ft
|
860
Nm
|
634.30342
lbf-ft
|
870
Nm
|
641.67905
lbf-ft
|
880
Nm
|
649.05467
lbf-ft
|
890
Nm
|
656.43029
lbf-ft
|
900
Nm
|
663.80591
lbf-ft
|
910
Nm
|
671.18153
lbf-ft
|
920
Nm
|
678.55715
lbf-ft
|
930
Nm
|
685.93277
lbf-ft
|
940
Nm
|
693.30839
lbf-ft
|
950
Nm
|
700.68402
lbf-ft
|
960
Nm
|
708.05964
lbf-ft
|
970
Nm
|
715.43526
lbf-ft
|
980
Nm
|
722.81088
lbf-ft
|
990
Nm
|
730.1865
lbf-ft
|
1000
Nm
|
737.56212
lbf-ft
|
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