It is often said that 1 kg equals 2.2 lb. What does this statement mean? What would be the proper way...?

Question

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It is often said that 1 kg equals 2.2 lb. What does this statement mean? What would be the proper way of making the comparison? I know that they're equivalent measurements, but what does "equal" really mean? How could I prove this?

Answer 1

1 kg and 2.2 lbm experience the same amount of gravity on Earth.

(lbm) is pound mass to distinguish it from (lbf) pound force.

Answer 2

They are called different "scales" of measurement. Meaning that for the same "amount" of that measurement, the number of "units" in the different scale will be different.



Other examples could be inches and centimeters. Both measure distance.



One thing to be careful of here is that kg can be used to measure MASS while lbs are a measure of FORCE. So, the amount of FORCE (2.2 lb.) exerted on an object of a certain MASS (1 kg) by gravity, for instance. If that is what you are getting at, then 1 kg does not equal 2.2 lb at all.



See what I'm saying?

Answer 3

Technically that is an incorrect statement (It is an apples to oranges comparison) because kg is a measure of mass and lbs is a measure of force. What should be stated is that a mass of 1kg has a weight of 2.2 lbs on Earth's surface. On the moon 1 kg would weigh 0.37lb. For a correct comparison you should compare lbs to Newtons.



1 lb is 4.448 N.

Answer 4

Lb is a measure of force; ye olde English unit of mass is the slug. A slug is the amount of mass that weighs 1 lb standard Earth gravity, g, where 1 g = 32 ft/s^2. Recently, in an attempt to rescue a bad system of measurement from being scrapped by legislation, a new unit of mass was introduced; lbm is a mass which weighs 1 lbf in standard Earth gravity. (American merchants keep lobbying Congress not to switch to metric because ye olde English system does such a good job of keeping the customers confused. The last thing they want is an informed customer.)



The correct way to make your statement is, "A kilogram weighs 2.20462262184877580722973801345027 lb in standard Earth gravity."



At the link below, click "show exact conversions" to get the precise fraction; then use a calculator to change to a decimal number. Ignore the fact that WolframAlpha thinks lb is a unit of mass.

Answer 5

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Weight wise, depending upon the system you use (imperial versus international). An object weighs 1 kg using the international system. The same objects weighs 2.2 pounds using the imperial system. It`s like saying 1 inch equals 2.54 cm. Imperial versus international.

Answer 6

It means that something the measures of 1kg and 2.2lb represent the same mass for an object.



Take something with a mass of 1kg on digi scales and use imperial digi scales to see if it weighs exactly 2.2.lb to prove it

Answer 7

(1) Something that has a mass of 1kg would take a force of 2.2lb to lift on earth or other planets where grivity=9.8N (So 1.1lb = 49N).

(2) On earth, it takes a force of 2.2lb to lift a mass of 1kg

(3) "Equals" just means "is the same as".

(4) Not sure what you have to prove; if it's what equals means, look it up in the dictionary; if it's that 1kg=2.2lb then weigh the same object using each scale and calculate the ratio from the results.

Answer 8

I hope this helps:



Technically, kg is mass, and lbs are force... but mass and force could be considered the same for much of the calculations on earth's surface.



1inch of something is equal to 2.54cm of something - they are equal. 1in of X = 2.54cm of X



... or 1in/2.54cm = 1 ... or 2.54cm/1in = 1.



What is so cool about this is, given you know you can multiply anything by 1 and not change it, this allows you to convert things...



1 yd of cloth * 36in/1yd * 2.54cm/1in = 91.44cm of cloth



You just took something, multiplied it by 1 two separate times, and ended up with the same thing! Huh!! Note: You have to pick the right one (2.54cm/1in OR 1in/2.54cm) to get the units to cancel (yds cancel, in cancel, cm are left!

Answer 9

the metric weight of 1kg is equal in weight to 2 lbs imperial weight

Answer 10

1kg Lb