To lift just one pound, you would need 37 balloons and 423 liters of helium! The average human weight is 137 pounds. For that, you would need over 5,000 standard balloons and almost 58,000 liters of helium! If you used a jumbo balloon measuring 36 inches, you would only need 145 balloons – but still the same amount of helium.
You calculate how much helium you need to launch your payload with the knowledge that 1 cu.ft. of helium will lift 28 grams. You divide the weight of your balloon and payload (2400 g) by 28 g/cu.ft. to get the total number of cubic feet of helium required for your launch (2400 g ÷ 28 g/cu.ft = 86 cu.ft.).
Helium is safer as a lifting gas because it is inert and does not undergo combustion. Water vapor . The gaseous state of water is lighter than air (density 0.804 g/L at STP, average molecular mass 18.015 g/mol) due to water's low molar mass when compared with typical atmospheric gases such as nitrogen gas (N 2). It is non-flammable and much ...
Helium is less dense than air. Helium has 0.0114 pounds per cubic foot. For a one cubic foot helium filled balloon, gravity pulls the down on the helium with a force of 0.0114 pounds while the air pushes up with a force equal to the weight of the air the helium displaced, or 0.0807 pounds. The difference in the up and down force is 0.069 pounds.
How much helium would be required to lift a mass of 35 lb? « Reply #12 on: 24/11/2008 04:26:28 » If your struck by lightning or something similar of that nature, hydrogen can be used.
Jan 26, 2008· It takes about 0.7 lbs of helium to lift 1 lb. So, about 100 lbs of helium. That's a lot. 0 0. MVB. Lv 6. 1 decade ago. What you need to do is calculate how much helium you need to displace 140 pounds of air, plus the weight of the helium itself.
Stated another way, 1,000 cubic feet of hydrogen at 32 degrees [fahrenheit] temperature, at sea level, will lift 75.1 pounds while the same volume of helium will lift 69.6 pounds." Helium, a by-product of natural gas production, has a lifting capacity of 1.02 kg/m3 (0.0640 lb/ft3). Cost: US$50 - US$70/MCF (1000 cubic feet) Methane
It takes about 300 balloons to lift 200 pound manballoon filled with exactly 1 sq ft of helium yields about 28.2g (upward thrust)453.6 grams/Lb453.6(1Lb) /28.2= about 16 blnsSo to get one pound ...
Sep 06, 2008· So to calculate the lifting power of Helium, start with the weight of air in volume L. Since the Helium itself has weight, we need to use the difference in density between air and helium. Since the density of air is 1.2 kg/m3 and Helium is 0.1787 kg/m3, to lift a object of 1 pound (0.453kg), you need 0.453/(1.2-0.1787) m3 of helium, or 0.443 m3.
Oct 29, 2007· Therefore, you get 25 grams lift for each mole of helium. To lift one pound (454) grams you need 21 moles of helium (or 84 grams of helium) about 3 ounces (weight) of helium. Which would take up 506 liters or 18 cubic feet. (the size of a refrigerator) 2 0. egleview. 1 decade ago. 200 pounds…
Sep 14, 2015· Helium is much lighter than air so it float in the air . A normal balloon has a diameter of 1 foot, that is not a very big balloon and it only lift up to 14 grams. Such as 4 sugar packets. If you want to lift your lunch that weight a pound, you will need a 3 foot diameter balloon. This is a ...
Jun 28, 2018· The density of helium is equal to 0.1785 grams per liter. The density of air, on the other hand, is about 1.25 grams per liter. Leaving some tolerance for the weight of the balloon and the string, we can approximate that every liter of helium has a lifting force of one gram.
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How many cubic feet of helium is required to lift, say, 300 or 500 pounds? Asked by: Kevin Petersen Answer So you want to build a blimp! OK the first principle we need to invoke is that of buoyancy. Any object in a fluid feels an upward force equal to the weight of the fluid displaced by the object. For example, if a boat's hull takes the place ...
Based on the calculations here it takes around 32 regular helium balloons to lift 1 lb. So dog definitely wouldn't be in the air with less than 10 balloons. level 2. 154 points · 1 year ago. No I'm pretty sure it takes about six, just look! level 2. 75 points · 1 year ago.
Sep 05, 2007· It's not the pressure that provides buoyance, it's the volume. Each 22.4 liters of helium in a balloon (which means at low pressure) has a mass of 4 g and displaces 29 g of air, for a net lift of 25 g. So you can figure out what volume is needed for 150 lb of lift: V = 22.4 L / 25 g * 150 lb * 453.6 g/lb = 60964 L = 2153 ft^3. P.S.
Research Experiment 110 Pound Person One Pound Brick 62 balloons!!! A normal balloon at an amusement park might be 30 cm (about 1 ft) in diameter. 4/3 x pi x 15 x 15 x 15 = 14,137 cubic cm = 14 liters If you weigh 50 kg (about 110 lbs), then you weigh 50,000 g. Divide your 50,000
Apr 01, 2000· It would only take four of those to give you the same lift. One balloon that is 30 meters (about 100 feet) in diameter displaces 14,137,000 liters, so it can lift 14,000 kilograms (about 31,000 pounds) -- this is roughly the size of a large blimp.
8' Chloroprene 8' 16 lbs. 15.5 lb. (7.03kg) 267 cu. ft. <1 18 Days - ... Lift ability figures are calculated at standard temperature and pressure at sea level in an indoor setting. Actual results will vary greatly with inflation ... Helium Capacity 1.5 cu. ft. Average Float Time
About Helium; Helium weighs 0. gram per cubic centimeter or 0.1785 kilogram per cubic meter, i.e. density of helium is equal to 0.1785 kg/m³; at 0°C (32°F or 273.15K) at standard atmospheric pressure.In Imperial or US customary measurement system, the density is equal to 0.01114 pound per cubic foot [lb/ft³], or 0. ounce per cubic inch [oz/inch³] .
Research Experiment 110 Pound Person One Pound Brick 62 balloons!!! A normal balloon at an amusement park might be 30 cm (about 1 ft) in diameter. 4/3 x pi x 15 x 15 x 15 = 14,137 cubic cm = 14 liters If you weigh 50 kg (about 110 lbs), then you weigh 50,000 g. Divide your 50,000
About Helium; 1 cubic centimeter of Helium weighs 0.00018 gram [g] 1 cubic inch of Helium weighs 0.0001 ounce [oz] Helium weighs 0. gram per cubic centimeter or 0.1785 kilogram per cubic meter, i.e. density of helium is equal to 0.1785 kg/m³; at 0°C (32°F or 273.15K) at standard atmospheric pressure.In Imperial or US customary measurement system, the density is equal to 0.01114 pound ...
The atomic weight of a helium atom (4.002) is approximately four times that of an individual hydrogen atom (1.007), but since gaseous hydrogen is a diatomic molecule containing two hydrogen atoms (H 2), helium gas is only twice as heavy as hydrogen gas.The Relative Lifting Ability of Hydrogen and Helium. Although helium weighs twice as much hydrogen, because each gas is so much lighter than ...
HELIUM has a lift of .84 ounces per cubic foot at sea level. To determine the volume of a balloon in cubic feet, multiply the cube of the radius in inches by 1.333, multiply the result by 3.1416, and then divide by 1728. diameter/2= Radius, radius *12 for radius in inches=ri,
