noun Physics. a meter-kilogram-second unit of work or energy, equal to the work done by a force of one kilogram when its point of application moves through a distance of one meter in the direction of the force; approximately foot-pounds. Kilogram-meter definition is - the meter-kilogram-second gravitational unit of work and energy equal to the work done by a kilogram force acting through a distance of one meter in the direction of the force: about foot-pounds.
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I have a good mental conception of divided units, e. Meters per second just usually means how many meters are traversed by an object each second. But I don't really have a mental conception of what it means when units are multiplied, e.
Can anyone explain in simple physical terms what a kilogram-meter is? By kilkgram question you could see divided units as rate, an amount of one quantity would be changed based on the amount of another. Kilkgram looking it at that way you could think about multiplied units as conserved quantities, if you would double one you should half the other to have the same effect. Some interesting examples could be:.
From the point of division the resistance is the amount of power required at a how to enable onboard sound in bios current. Or from the point of multiplication, you could keep the same voltage difference by increasing the value wuat the resistor by the same iz as decreasing the current. The kilogram-metre or more often the kilogram-kilometre is a unit of measurement indicating that 1 kg lets assume of coal has been moved 1 km towards, for example, a power station.
It's used by big freight companies, governments etc. Wikipedia link here. I realise you asked for an explanation of general multiplied units, rather than about the kg-m specifically, but there are already a few general answers.
Multiplied units often turn up in "double proportion" situations, where a particular quantity is proportional to multiple dependent variables. To take a deliberately non-physics example, a difficult task might need either many people to work on it or people to work on it for a long time, so its difficulty is proportional to both the number of workers and the time spent and could thus be measured in "person-days".
A six person-day job would require two people to work for three days to complete it, or three for two days, or whatever. The validity or otherwise of the model in which these two working schemes are equivalent is left as an exercise for the reader! Moving to a fairly exact parallel from a physics context, an electron-volt - or, to be pedantic, an electron-charge-volt - is a good unit of energy because the work what is a kilogram meter to move a charge through a potential difference is proportional to both the charge and the potential difference.
The same goes for a coulomb-volt, although of course we just call that a joule. Sure, you can explain this by cancelling out SI base units, but to some extent what is going on in jacksonville a red herring.
If we defined the coulomb and the volt as base units, we would be perfectly happy to define our unit of energy as a coulomb volt. Many composite units are more intuitively understood when whzt using other units.
When confronted with a non-obvious combination of units, you can try to rewrite it until it makes sense, but it's really always best to just look at the context, and everything should be obvious rather quickly. This is arguably a bit contrived, but it fits si bill. However, there is a close analogue which you do find in practice, if you change meters to seconds.
In the laser cooling of atoms, for example, one usually worries about the energy delivered to the atoms, in the form of the power per unit area, which is pretty standard. However, since the transitions involved are pretty narrow, it is also important to have one's lasers very sharply in tune with the transition, since the atoms will not respond to frequency components outside the transition bandwidth. Thus, the relevant how to make brownies from scratch with chocolate syrup is something in watts-per-square-meter per megahertzi.
Consider a collection of a large number of small spinning spheres lying on a line, which are all spun up and spun down using electromagnetic fields.
A kg-m is the unit of the moment of inertia per unit length on this line. Consider a car moving on a road with streetlamps. The faster the streetlamps go by, the more momentum the car has.
The momentum per unit freqency of the car has units kg-m. A kg-m is the unit of the momentum per hz. Consider an object. It has some number of kilograms of mass, and it has moved some number of meters of distance. As if you were tracking its momentum and keeping a running total.
You can take a sum kipogram divide it by a count to get an average; when you divide by the number of seconds that the object was travelling, you get its average momentum for that period. Divide them by seconds, and you get angular momentum, or action. Divide again, you get force.
Divide yet again, and you get force onset rate. Since multiplication is commutative and associative with units, there are often many equally valid intuitive models for a given combination of units. Go with what works for you or the whatt at hand, and always be ready to see things another way.
The kg-force is the weight of one kg in one gee. Thus, 9. A kilogram-meter doesn't have an intuitative physical significance.
Laar's product examples are meaningful for composite units like force or volts, but when dealing with products of basic w like kg, m, s, moles, amperes, physical meaning seems to only occur what is a kilogram meter there's a divisor like seconds, per your comments. So for example, kilogram-meter without a second divisor for momentum is intuitively meaningless. To balance it, you've got to add a counterweight on the opposite side of the same kg. Think engine flywheel Sign up to join this community.
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Learn more. What exactly is a kilogram-meter? Ask Question. Asked 8 years, 9 months ago. Active 1 month ago. Viewed 68k times. Improve this question. Add a comment. What is a cling on Oldest Votes. Improve this answer. Laar Laar 4 4 silver badges 7 7 bronze badges. Ant Ant 2 2 silver badges 8 8 bronze badges.
Kilogram-meter is The amount of energy needed to move one kilogram one meter? Of course you need to include the gravitational acceleration with its proper units to compare to any other form of energy.
With some imagination it could be metr anything! Emilio Pisanty Emilio Pisanty k 28 28 gold badges silver badges bronze badges. This involves integrals, which gave me headaches even back when I did know how they worked, back in college.
If I think of something simpler I'll certainly post it here, but I doubt there will be anything elementary. Ron Maimon Ron Maimon 1. It's a physical quantity of dimensions kg-m. Such a continuous sum is just an integral. Jon Purdy Jon Meger 4 4 silver badges 9 9 bronze badges. Using kg as force is not SI, but is rather common. Rich Rich 21 1 1 bronze badge. Michael Luciuk Michael Luciuk 5, 3 3 gold badges 25 25 silver badges 38 38 bronze badges.
This what are ways to get pregnant easily seem like a good answer. I can't downvote, but it really should be deleted so as not to confuse future knowledge seekers. Also, you state your answer as a fact, not your opinion. Do opinions even enter into it? They are composite not basic units. We'll just have to disagree on this topic.
Show 3 more comments. Henry Henry 1, 13 13 silver badges 16 16 bronze badges. Johan Johan 1 1 1 bronze badge. Featured on Meta. New onboarding for review queues. Linked 0. See more linked questions. Related 4. What is a kilogram meter Network Questions. Question feed.
A unit of energy or work, being the amount needed to raise one kilogram one meter: it is equal to foot-pounds. The kilogram-metre (or more often the kilogram-kilometre) is a unit of measurement indicating that 1 kg (lets assume of coal) has been moved 1 km (towards, for example, a power station). It's used by big freight companies, governments etc. as one metric of how much hauling they're doing. Kilogram is the International System of Units. Metre is the unit measurement of length. Use this online unit conversion calculator to convert kilogram (kg) to meter (m) with ease. Kilogram: It is a unit of mass which is equal to mass of the International Prototype of the .
The concentration of PM2. The European formula for Fireball has even less: under one gram per kilogram of propylene glycol. There is, of course, cheapness to be considered -- the dollar per kilogram bill for putting a payload into low earth orbit. You can only see from above about a meter below the surface. Down the block, a taxi that had been parked with meter ticking across from Engel's apartment-hotel drew away slowly.
Plants are set out one meter apart in each direction, as they spread considerably. I think the change began with the failure of the supply of gas from the penny-in-the-slot meter. Indeed, he states explicitly that most forms of poetry do use all of the media mentioned: rhythm, tune, and meter. A Calorie is the amount of heat required to raise the temperature of one kilogram of water from zero to one degree Centigrade. Top Definitions Quizzes Examples Medical kilogram-meter.
New Word List Word List. Save This Word! Abbreviation : kg-m. Set some time apart to test your bracket symbol knowledge, and see if you can keep your parentheses, squares, curlies, and angles all straight! Compare joule. Origin of kilogram-meter First recorded in — Words nearby kilogram-meter kiloelectron volt , kilogauss , kilogram , kilogram calorie , kilogram-force , kilogram-meter , kilohertz , kiloliter , kilolitre , kilomegacycle , kilometer.
Example sentences from the Web for kilogram-meter The concentration of PM2. Philippine Mats Hugo H. In Accordance with the Evidence Oliver Onions. A unit of energy and work in the meter-kilogram-second system, equal to the work performed by a one-kilogram force acting through a distance of one meter.
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