![]() These steps can also be used for any vehicle. This results in a CG of 36" inches, as measured back from the center of the front axle, or something like this:įor future reference, you can make a discreet mark at that point on the frame, or note some feature that lines up with that measurement, and you will know exactly where to place the the stand so the bike will balance nicely when lifted. Now using our formula, we calculate the CG as follows: We measure the distance from the center of the front axle to the center of the rear axle with a result of 60 inches. Let's say for this example, the bike weights 500 lbs total. The center of mass is a position defined relative to an object or system of objects. If You Select 3D Actually, the difference of the 3D center of gravity. After that, the Center of gravity will be given in X and Y coordinates. Written out, that is Critical Dimension times Weight Two, divided by the Gross Weight equals the Center of Gravity, measured in inches aft from the front axle. If you click on the 'Calculate' button, the center of gravity will be calculated. That will give you the wheelbase or critical dimension (CD).ģ) With these numbers in hand, we can now determine the Center of Gravity (CG). The most accurate way to do this is to measure the distance from the center of the front axle to the center of the rear axle. The rear wheel will be Weight Two (W2).Ģ) Measure the wheelbase. Use a scale (or two) to get the individual wheel weight for both the front and rear wheel. I'm not really sure if it's particularly useful, but somebody might find it handy.ġ) First, weigh the bike, to include all accessories that are permanently mounted or are usually mounted or carried (crash guards, panniers, tool kits, etc.) This will give you a basic vehicle weight, or for the purpose of this formula, the Gross Weight (GW).Ģ) Now determine the weight of each wheel. So, since weight and balance is what I do, I figured maybe someone out there that uses these style of lifts might like to know the formula for determining the C.G. THE CENTER OF GRAVITY GUY TRIALThe idea is that knowing exactly where to position the bike will eliminate any trial and error to get the bike to balance nicely on the stand. THE CENTER OF GRAVITY GUY HOW TOTo dive into the water, fishes release the air from the swimbladder, hence their volume decreases, and buoyant force acting upon them also reduces.Someone brought up a question of how to figure out the balance point of a motorcycle when using one of those motorcycle lift gadgets that go under the frame of the bike to lift it. Fishes filled their swim bladder with air to rise to the water surface as it increases their volume, and more water is replaced by them, hence buoyant force exerted on them also increases. Most of the fishes have a swim bladder, which helps them control the buoyant force acting on them. To measure the density of the substance, it is suspended to the spring balance, and when it is immersed in a liquid whose density is known to us, the apparent loss in the mass of the sample substance is noted down, and by using the Archimedes’ principle, the density of the substance is then calculated.Īrchimedes’ principle also comes into play to make a fish float in the water. ![]() The density of the solids can be measured using this principle. Milk is kept undisturbed for a while until the cream deposits on it, and then the lactometer is placed in this milk sample, if the lactometer floats it means that milk is pure, but if the lactometer sinks, it means milk is adulterated or impure.Īrchimedes’ principle finds its applications in geology too. Lactometers measure the specific gravity or density of the milk, which helps in finding the contents present in milk and determine its purity. Like hydrometer, it also works according to Archimedes’ principle. Lactometer is an instrument that is used to check the purity of the milk. ![]() ![]() The density between the air and the balloon is controlled by varying the amount of hot air in the balloon. When the weight of the surrounding air and hot air balloon is equal, it becomes stationary. ![]() The balloon rises in the air when the weight of the air surrounding the balloon is greater than its own weight, whereas if the weight of the balloon is greater, it will start descending. As saltwater has a higher density than freshwater, the buoyant force acting on the body in saltwater will also be higher as compared to freshwater, which is why it is easier for the swimmers to swim in the saltwater.Īrchimedes’ principle is also applied to the working of hot air balloons. The Buoyant force exerted on the body by the fluid is mathematically expressed as, The Buoyant force acts at the center of gravity point of the displaced fluid, this point is known as the center of Buoyancy. Archimedes Principle is named after its discoverer, the Greek mathematician, and physicist ‘Archimedes.’ It is based on the principle of buoyancy, which states that if a body is partially or fully submerged in the fluids (gases or liquids), then the fluid exerts an upward force called the buoyant force on the body whose magnitude is equal to the fluid weight displaced by the body. ![]()
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