fj12ryder wrote:
Actually the correct term is "pound-foot". Pound-foot is a unit of torque, foot-pound is a unit of energy. :)
Tighten lug nuts to 100 lb. ft., but an engine can develop 100 ft. lbs of torque.
Courtesy of the pedantry department. :)
The engine specification is still referring to torque here and hence should, by your dictum, also be expressed as pound-feet. It might be better to say that Sisyphus did 100 ft lbs of work with each step when rolling his stone up the mountain (and so expended 100 ft lbs of energy).
Apparently from some googling at one point the SAE decreed that static torque would use pound-feet, and dynamic torque foot-pounds. If true, that's just plain bizarre.