Sep 28, 2008 · The unit of mass in the USA system is the seldom used 'slug', which weighs 32 pounds (lbs) on Earth. A net force of 1 pound (lb) will give an object with a mass of 1 slug, an acceleration of 1ft/sec^2, per Newton 2.

Nov 12, 2011 · It appears that a pound is a unit of mass however a pound of force is defined as a pound multiplied by the Earth's gravitational constant. So a pound may refer to the unit of mass or the unit of force however these are different and should be inferred from context.

Apr 25, 2011 · Hi friends, I have so much confusion between torque unit Inch -lb and inch -lbf . I think inch-lb = inch-lbf i know that 1 lbf = 32.2 lb.ft / sec^2 I need 2500000 inch-lbf torque required so i consider lb-inch . Thanks, Ram18

Feb 27, 2007 · Officially for me, a pound is a unit of weight, just as a Newton or a dyne is a unit of weight (or force). Grams and kilograms are considered a unit of mass. I often like when people say that 1 pound is equal to 454 grams and vise versa. Of course this is only true on the surface of the Earth but anyway...

Dec 17, 2014 · In U.S. high schools, physics is normally taught in meters, kilograms and seconds. Most textbooks talk about the pound only as a unit of force and only as an example of a system of units not to use in the classroom. In general usage in the U.S. outside the physics classroom, the pound is used interchangeably as a unit of force or of mass.

Feb 21, 2011 · So in this engineering course I do at my university called Statics, we often use a unit of lb per ft as a unit of force when calculating moments. However, I was just watching an episode of Big Bang Theory when Sheldon said something about a common mistake being when people use lb per ft as a unit of force and that it's rather a unit of work.

Mar 6, 2007 · Since the Newton IS a unit of force, they can only mean "pounds" as a unit of force: LBF. ... ok i have a ...

Feb 14, 2012 · There's another old English unit, the poundal.. one pound of mass weighs 32.174 poundals in standard gravity... sort of the flip side of the 'slug'. Some old Mercedes Benz shop manuals gave torque specifications in Kg-meter which ought to have driven purists crazy.

Feb 8, 2014 · A slug is 32.2 lbm. Slug is really the mass unit you want to use if you want F = ma to give you the force in lbf. One lbf is the force you need to exert on a mass of 1slug to give it an acceleration of 1 ft/sec 2. If you exert a force of 1 lbf on a 1 …

Apr 20, 2007 · BTW I think slugs is an archic unit, the offical unit is now lbm, pounds mass. Slugs are still in use and are an official derived unit. Moments of inertia are almost always expressed in English units as slugs ft 2 , for example.