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- mechanical engineering - Pound-force (lbf) vs Pound-mass (lbm . . .
1 lbm * 32 2 ft s2 = 32 2 lbf that would have been perfect, a lbf = lbm ft s2, but some idiotic reason he decided that 1 lbm * 32 2 ft s2 should = 1 lbf at sea level on earth, so to make the units work you have to either divide the left side or multiply the right side by gc i e 32 2 lbm-ft lbf-s2
- Converting lbm lbf: Help with Newtons 2nd Law - Physics Forums
I'm a little confused about the conversion between lbm and lbf (mass pounds and force pounds) I'm doing a problem where I'm using Newton's 2nd law to calculate mass flow rate F= Δ((Mass flow rate)*Velocity) I know my force is 400 lbf and velocity is 40 ft s so mass flow rate is
- What is difference between in-lb and inch-lbf? - Physics Forums
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
- What Do Lbf, Lb, and Lbm Really Mean in American Units? - Physics Forums
As such, 1 lbf = 0 453 592 37 kg * 9 80665 m s 2 = 4 44822162 N There is also a unit of mass called the slug, defined as the mass which exerts a force of 32 174 049 lbs under the gravitational acceleration at the Earth's surface
- Why is 1 lbm considered equal 1 lbf? - Physics Forums
My understanding is that 1lbm = l lbf 32 174 ft s^2 = 3 1081*10^-2 (lb*s^2) ft (slug) My textbook suddenly claims that 1 lbf is equal to 1 lbm This doesn't fundamentally make sense to me because one unit is mass and the other is force (which has an acceleration constant) Thanks for helping
- Pounds is a unit of mass or weight - Physics Forums
The English system uses both pound force (lbf) and pound mass (lbm) A lbm is equal to the mass that produces a force of 1 lbf on the Earth A slug is also a unit of mass equal to 32 174 lbm Attached are excerpts from 2 of my textbooks from college, so you don't have to take my word for it
- What Is the Difference Between lbf and lbs in Terms of Newtons?
Since the Newton IS a unit of force, they can only mean "pounds" as a unit of force: LBF Mar 6, 2007
- Is Our Weight Measured in lbm or lbf? - Physics Forums
I'm sure this has been asked before but it's annoying me When we weigh ourselves is it in lbm or lbf? Because we weigh different on say, the moon, our weight must be lbf right? But if I weigh 150 any unit converter will say I weigh 68kg Or do I weigh 2 13kg? Can I say I weigh 21 Newtons
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