How are scales and balances constructed?
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Modern scales use strain gages as the basic building block.\n\nCheck out this site:\n\nhttp://zone.ni.com/devzone/cda/ph/p/id/144\n\nA balance is simpler and more primitive since the symmetry of the device is the basis.  Weights are added to the side opposite the object to be weighed until the gage centers.\n\nj
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Well it depends on the problem specifically, but usually you have to find the ratio of "two corresponding lengths in two similar geometric figures."(mathworlds)  Actually that is what the scale factor is.
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IF we know the coin is heavy and we have 5 scale usage , we can find out the heavy coin amist 243 coins.\n\nFor the first question, with 3 scale usage and when u dont know is the coin is heavier or liter\nNumber the coins A-L. \n\nBegin by weighing four against four. If they balance, then weigh any of the remaining three against any three of the good coins. \n\nIf they balance then the odd one is the remaining coin and can be \nidentified (whether it's lighter or heavier) in the final weighing. \n\nIf three against three do not balance, take the three containing the odd \ncoin and weigh any one against another. \n\nThus: \n\nIf the first weighing of four against four does not produce a balance, then \nthe second weighing involves three against three with the coins switched \nbetween the two pans and a good coin introduced. \n\nSo: \n\nIf A+B+C+D > E+F+G+H \n\nWe try A+B+E against C+F+J \n\nIf A+B+E + C+F+J then either D is heavier or G or H is lighter, so weigh \nG against H. \n\nIf A+B+E > C+F+J then either F is lighter or A or B is heavier, so we \nweigh A against B. \n\nIf A+B+E < C+F+J then either E is lighter or C is heavier, so weigh \neither against a good coin, eg. K against E. \n\nAn alternative second weighing is A+B+E against C+D+F, which follows \nsimilar lines to the above.
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You shake it. You can describe it mathematically with a step function.
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Try this:\n\nhttp://education.yahoo.com/reference/weights_and_measures/
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Yes, you place a pile of 6 coins on either side of the scales, which ever set of six is lighter you split into 2 sets of 3 coins and do the same, then with the lightest set of 3 coins, you weigh 2 of them, if they weigh the same, the coin you didn't weigh is the counterfeit.  Or which ever of the 2 coins was the lightest.
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Weigh 3 against 3.\n1. If they don't balance, weigh 1 against 1 from the heavy side. If they balance, it's the coin from that side that you didn't weigh.\n2. If they do balance, it's one of the other two - weigh them against each other.
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The basic principle behind a Chinese steelyard balance is torque—or leverage, if you prefer.\n\nA symmetrical balance has the two weights equidistant from the point at which they are suspended (let’s call it the “fulcrum,” for simplicity’s sake):  when the weights are equal, the balance levels out.  But let’s say you’re trying to measure the weight of a two-pound object.  Then the balance will level out if you place a two pound weight equidistant from the fulcrum, or a one-pound weight half as far from the fulcrum, or a half-pound weight a quarter of the way from the fulcrum.\n\nThe steelyard balance puts the object to be wieghed at a specific distance from the fulcrum, then moves the known weight along the length of the opposite arm.  The ratio of the distances between the fulcrum gives the ratio of the two weights.\n\nThe link shows the best picture of one that I could find.\n\n\nRyan Wyatt\nRose Center for Earth & Space\nNew York, New York
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3 on one side, 3 on the other.\n\nIF they all balance, then the 2 left over has the lighter stone, just weigh and find out the lighter stone.\n\nIF they do NOT balance, then take the 3 that's lighter, take TWO stones from that group and weigh.\n\nIF they are balanced, the remaining stone from the 3 is the lighter stone.\n\nIf there's one that's lighter, then that's the stone you want.\n\nOnly two weighings in either case!
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Kips thousand instructions/second data processing.\n\nTwelve grades of steel, having yield strengths varying between 42 kips per square inch (ksi) and 100 ksi, were used to fabricate the perimeter column and spandrel plates as dictated by the computed gravity and wind demands.
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Split the 8 marbles into three groups of 3, 3 and 2.\n\n1st weighing: put each set of 3 marbles on either side of the scale.  If they balance perfectly, the heavy marble must be one of the other 2.  In that case, for the second weighing just use the other 2 marbles and see which is heavier.\n\nIf after the first weighing one set of 3 is heavier than the other, discard the lighter set.  You now have 3 marbles, one of which is the heaviest.  Put 2 of the 3 on the scale; if they don't match, you know which is heavier.  If they DO match, the 1 you left off is the heaviest.
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First, you use a scale to measure a distance on a drawing.  \n\nSecond, the drawing will indicate the scale.  ALWAYS check your scale against the scale bar.\n\nFor a typical 12" long engineers scale, for the 10 scale - 1" = 10',  the stick is divided up into 10 units, and each unit is divided by 10.  Each unit is 1 inch.  The difference between an engineers scale and an architects scale is that we enginners use the decimal system.  The architects scale uses the fraction system which is good for feet and inches.  Engineers don't use inches.  We use feet only.  \n\nTypical Eng. Scale is 1" = 50'\nTypical Arch. Scale is 1/8" = 1'\n\nFor instance, 4' - 6" is an Arch. dimension.  The same Eng. dimension is 4.5'.\n\nFor the engineers scale, say the 10 scale, each unit is divided by 10 so you can measure to the nearest tenth of an inch and thus tenth of a foot. \n\nSo for 1" = 40', you turn to the 40 side and for 1" = 100' you turn to the 10 side and multiply your measurement by 10.\n\nFor Arch. Scale, it takes practice.
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I don't really know .. but look at it this way, you are special !!! But I thought there was a person holding the scale in any picture I've ever seen. Oh well first part sounds good though don't it? Heres a link.
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Yes the scale will reflect the additional weight.\n\nThe downward force on the water is still an additional downward force which is measured by the scale.
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try http://www.wfu.edu/~ylwong/balanceeq/balanceq.html which is an interactive site OR try http://members.aol.com/profchm/balance.html if you want a lot of examples.
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It depends upon applications.\n\nA balance (also balance scale, beam balance or laboratory balance) is best to  to measure the mass of an object. \nIn its conventional form, this class of measuring instrument compares the sample, placed in a weighing pan (weighing basin) and suspended from one end of a beam with a standard mass or combination of standard masses in a scale pan (scale basin) suspended from the other end. To weigh an object in the measuring pan, standard weights are added to the scale pan until the beam is in equilibrium as closely as possible. Then a slider weight usually present is moved along a scale on or parallel to the beam (and attached to it) until fine balance is achieved. The slider position gives a fine correction to the mass value.\n\nMass spectrometry (also known as mass spectroscopy (deprecated)[1] or in common speech "mass-spec") is an analytical technique used to measure the mass-to-charge ratio of ions. It is most generally used to find the composition of a physical sample by generating a mass spectrum representing the masses of sample components. The technique has several applications, including:
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Hi: \n\nFirst off let start by explain what a scale is  a Scale is a ratio of two sizes . It is way to put something that is too big or too small in the real world to a size that we  humans can relate to for example Let say a Saturn V rocket is 309 feet tall to make a 1/12  scale model of it. first we know the real rocket is 309 feet. on our model scale  1inch equal 12 inches or 1 foot so:\n\n309/12 = 25.75 or 25 and 3/4 inches\n\nour scale model of the Saturn V rocket is 25.75 inches or slightly larger then 2 feet tall (actually 2 feet 1 3/4 inches tall) \n\nSomethings are too small in the real world  ( like pocket watch gears or electronic parts) So we  use a enlarging  scale and it written  like this  4/ 1 or 1 inch  equals 4 inches  for example a gear is 1/8" in diameter in the real world would be drawn on a blueprint drawing with the scale 4 to 1 the gear is drawn at 1/2 inch  diameter  or 4 times it's actual size \n\n1/8 * 4/1 = 4/8= 1/2 inches\n\nthe way to remember a scale is what place is the 1 units  in relation to the scaling value or division sign or  " :" symbol  if the 1  is in front of the division sign or ":" symbol  your dealing with a reduction factor with means that the model or drawing is going to be smaller than the actual object itself\n\nIf the 1 unit is in back of the division or  ":" symbol with number greater than 1 in the front your deal with a enlarging factor meaning the drawing is bigger the the actual size of the object itself  \n\n\nOkay let's see what the answer is, for your problem:\n\nlet say your measuring a real rod that is 4.7 mm and your scale on a drawing of this rod is 2.5 :1  what is the drawing scale lenght of this rod is:\n\nrule 1: where is the 1 in relation to the scale value? \n\nanswer: behind it. So we are dealing with a enlargement drawing \n\nSo set the problem as follows:\n\n4.7 *2.5 =  11.75 mm\n\nThe drawing scale measured rod lenght is 11.75 mm or the rod lenght on the drawing is 11.75 mm