Fit Suspension & Brake ModificationsThreads discussing suspension and brake related modifications for the Honda Fit
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Static friction is the resistive force between an object and the surface against it GIVEN THAT the object is not in motion. Once the object is in motion, the friction force is known as kinetic (or dynamic) friction. The static friction force is usually greater than the kinetic friction force (ever notice it's harder to get a heavy object moving than it is to keep it moving?)
Weight, in English usage, is ambiguous. In common usage it's used to describe the "mass" of an object. However, in the scientific community, weight is something much different. For example, a kilogram is a unit of mass, and the weight of a 1kg object is simply the product of the mass and Earth's gravitational acceleration: w = m*g. In English units, this is a bit more complicated, as you have to convert from pound-mass (lbm) to pound-force (lbf) or throw the unit of slugs (1 slug = 1 (lbf*s^2)/ft) into the equation.
Education is learning. Enlightenment is a realization of a new perspective on a situation or of a new approach to a problem. One can lead to the other.
To anyone who takes the time to read this entire article, I encourage you to look up any and every term you do not fully understand.
I think you will find that kilogram is a force just like pounds. The only difference is the scale.(1 kg = 2.205 lb)
You can use m=w/g where weight is in pounds and the acceleration of gravity 32.16 ft/sec squared on earth averaged. (gravity does change with location on earth). Mass is merely the way to equalize weights btween various planets or any other place that the force called weight is measured.
Force Units
Newton [N, kg*g]
pound(-force) [lbf = 4.4482216152605 N]
Mass units
kilogram [kg]
pound(-mass) [lbm]
slug [slug = 32.17 lbm = (lbf*ft)/s^2]
As an engineer in training, I'm pretty sure I know the difference between weight and mass. No offense.
__________________ 2007 NBP Fit Sport MT Honda Floor Mats || Honda Cargo Net || 35% tint || custom CAI || Blox shift knob || LED dome + cargo lights || Megan axle-back || Zeta dead pedal || "Dirty White Boy" air freshener :-D
Force Units
Newton [N, kg*g]
pound(-force) [lbf = 4.4482216152605 N]
Mass units
kilogram [kg]
pound(-mass) [lbm]
slug [slug = 32.17 lbm = (lbf*ft)/s^2]
As an engineer in training, I'm pretty sure I know the difference between weight and mass. No offense.
As a PhD ME and ChE with 50 years experience, no offense taken.
Pounds and kilograms are units of force. The only difference is 1 kg is 2.205 lb. Both have to be divided by the respective acceleration of gravity in their units for the location involved, metric or english, to get mass.
As a PhD ME and ChE with 50 years experience, no offense taken.
Pounds and kilograms are units of force. The only difference is 1 kg is 2.205 lb. Both have to be divided by the respective acceleration of gravity in their units for the location involved, metric or english, to get mass.
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.
__________________ 2007 NBP Fit Sport MT Honda Floor Mats || Honda Cargo Net || 35% tint || custom CAI || Blox shift knob || LED dome + cargo lights || Megan axle-back || Zeta dead pedal || "Dirty White Boy" air freshener :-D
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.
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.
Did that help?
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.
Did that help?
A bit. Maybe we're just seeing the same thing from different angles *shrug*
__________________ 2007 NBP Fit Sport MT Honda Floor Mats || Honda Cargo Net || 35% tint || custom CAI || Blox shift knob || LED dome + cargo lights || Megan axle-back || Zeta dead pedal || "Dirty White Boy" air freshener :-D
Static friction is the resistive force between an object and the surface against it GIVEN THAT the object is not in motion. Once the object is in motion, the friction force is known as kinetic (or dynamic) friction. The static friction force is usually greater than the kinetic friction force (ever notice it's harder to get a heavy object moving than it is to keep it moving?)
Weight, in English usage, is ambiguous. In common usage it's used to describe the "mass" of an object. However, in the scientific community, weight is something much different. For example, a kilogram is a unit of mass, and the weight of a 1kg object is simply the product of the mass and Earth's gravitational acceleration: w = m*g. In English units, this is a bit more complicated, as you have to convert from pound-mass (lbm) to pound-force (lbf) or throw the unit of slugs (1 slug = 1 (lbf*s^2)/ft) into the equation.
Education is learning. Enlightenment is a realization of a new perspective on a situation or of a new approach to a problem. One can lead to the other.
To anyone who takes the time to read this entire article, I encourage you to look up any and every term you do not fully understand.
u can quote me definitions all u want but u lack fundamental understanding
a non-skidding rotating tire (zero slip angle and not "burning out or locking the brakes") is only under STATIC friction NOT dynamic friction
mechanical "weight" is MASS!!!!!! stop spreading dumbness around
engineers would use the term MASS
u r merely in training and r not a professional engineer
do u get 100% or more (bonuses points) on all your assignments and exams?
thought so
(perfect gpa DOES NOT COUNT as 100%)
understanding is NOT the same as reprinting facts (that merely means that u r as smart as a photocopier or fax machine)
reprinting formulae from a grade 10 science text book does not make u look smart (why did u bother?)
I think you will find that kilogram is a force just like pounds. The only difference is the scale.(1 kg = 2.205 lb)
You can use m=w/g where weight is in pounds and the acceleration of gravity 32.16 ft/sec squared on earth averaged. (gravity does change with location on earth). Mass is merely the way to equalize weights btween various planets or any other place that the force called weight is measured.
an object has mass in space but no weight
do u really think mass is used for different planets?
u can quote me definitions all u want but u lack fundamental understanding
a non-skidding rotating tire (zero slip angle and not "burning out or locking the brakes") is only under STATIC friction NOT dynamic friction
Um, yeah, and? No one asked me what the friction force is for a "non-skidding rotating" (i.e. rolling) object.
Quote:
Originally Posted by TheImmortal
mechanical "weight" is MASS!!!!!! stop spreading dumbness around
engineers would use the term MASS
u r merely in training and r not a professional engineer
do u get 100% or more (bonuses points) on all your assignments and exams?
thought so
(perfect gpa DOES NOT COUNT as 100%)
understanding is NOT the same as reprinting facts (that merely means that u r as smart as a photocopier or fax machine)
reprinting formulae from a grade 10 science text book does not make u look smart (why did u bother?)
Good job assuming I copied and pasted, because I didn't. The only thing I looked up was the relationship between a slug and a pound-force because, so far, I've only needed to use slugs in Thermodynamics (even in there, rarely.)
__________________ 2007 NBP Fit Sport MT Honda Floor Mats || Honda Cargo Net || 35% tint || custom CAI || Blox shift knob || LED dome + cargo lights || Megan axle-back || Zeta dead pedal || "Dirty White Boy" air freshener :-D
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