mechanical engineering - Pound-force (lbf) vs Pound-mass (lbm ...
Aug 25, 2015 · The following relationship is key to understand the link between lbm and lbf: 1 lbf=32.174 lbm ft/s^2 Arm yourself with this knowledge so that you can fight the good fight: the next time you …
fluid mechanics - Different Values for Different Calculations of ...
Apr 19, 2022 · Hmmm. Maybe 62.4 lbf/ft^3 calculated from converting from N/m^3 and 62.4 lb/ft^3 used in the formula of density*gravity are really the same thing. Why are you multiplying 62.4 by gravity?
pound force and pound mass - Engineering Stack Exchange
Feb 16, 2021 · I have a question about work measured in foot-pound. Let's say we have a 10 pound-mass ($10$ $\\text{lb}_m$) object. Then since that 10 pound-mass ($10$ $\\text{lb}_m$) object gives …
Barometer Column with Mercury - Engineering Stack Exchange
Olin's method yields the correct answer, but a dimensional analysis of the pressure number shows it using lbf. I barely understand how to go between lbf and lbm mass anyway, the only consistent way I …
Mass and weight of air in a room - Engineering Stack Exchange
A pound force is defined as the force required to accelerate a slug at 1 ft/s^2. The density of air is $\rho = 0.0724 \ lb_m/ft^3 = 0.0724/32.2 \ slugs/ft^3$ The weight of the air is $\rho V g = 0.0724/32.2 \ …
Unit Conversion for Mass Density - Engineering Stack Exchange
Mar 29, 2020 · I am doing a Finite Element analysis of a continuum. In my problem definition I use these units: mm for length, kPa for applied stress, and MPa for material stifness (Young's modulus). With …
How to Convert between Air (Dry Air) Normal Liters per Minute (NLPM ...
Oct 21, 2021 · I need to check the leakage of a product, the requirement is basically need to place a flow meter between dry air supply and the product, and apply a pressure of 100, 200, or 400 PSI, …
Thermodynamics - heat exchanger - Engineering Stack Exchange
Jan 10, 2021 · A thin walled double pipe counter flow heat exchanger is to be used to cool oil (Cp = 2198 J/kg°K) from 150°C to 40°C at a rate of 2.27kg/s by water (Cp = 4187 J/kg°K) that enters at …
mechanical engineering - Finding the mass in the tank of an air ...
Jul 11, 2015 · I am solving the following problem: The tank of an air compressor has a volume of 3 cubic feet and is filled with air at a temperature of 40 °F. If a gauge on the tank reads 150 psig, what is...
Converting air flow rate between kg/s and m^3/s
Apr 21, 2015 · Is 1 kg/s of air flow rate equivalent to 1 m 3 /s? I am calculating supply air flow rate into a zone for an air conditioning system. The simulation software gives the result in m 3 /s but the …