Quote:
Originally Posted by cojaro
PhD ME? I can't imagine the amount of math involved in getting that o_O
Do tell, if kg/g = mass, what units are used? I mean, if you're right, then all I've learned in Physics I, II, Thermodynamics and Statics is fundamentally incorrect! :O Even my TI89 says _lb*_g = _lbf. You must be yankin' my chain or something.
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Not at all. a measurement of mass includes the acceleration of its pull of gravity whether so stated or not, though usually the author includes the subscript m when mass is intended. It is primarily useful in physics where gravity is not as consistent as on earth. Force is just a vector magnitude expressed as pounds or kilograms.
Mass = force/acceleration and its units are always force/distance per sec per sec.
An object of one lbm has a weight of 32.16 lbf on earth and about 4 lbf on the moon. (memory says the moon has about 1/8 the gravity of the earth).
T189 is correct; pounds
mass x acceleration = pounds force. You can calculate easily as long as you use consistent measurement scales.
Kg/m/sec/sec x m/sec/sec = kg as an example.
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