How much helium is needed to lift a balloon carrying two people in a basket, if the total mass of people, basket, and balloon (but not helium gas) is 280 kg. The density of helium is 0.18 kg/m{eq ...
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.
Now to find the number of balloons, I just take the weight of the person (let's use David Blaine plus other equipment with a mass of 100 kg) and divide by the lifting force for one balloon.
Apr 04, 2018· Thus to lift 100 kg person, one would need to displace: 100 kg/1.2 kg/m^3 = ~83 m^3 of air Therefore if a material of negligible weight with dimensions of 4*4*6 metres (equalling 96 m^3) was filled with helium, a net upward lift of approximately 13 kg would be achieved.
Nov 02, 2020· Each cubic foot of helium can lift 0.069 pounds. In order to lift 100 pounds (which would include the weight of your load, the balloon, and the helium) you would need 1449 cubic feet of helium.
Nov 03, 2020· Each cubic foot of helium can lift 0.069 pounds. In order to lift 100 pounds (which would include the weight of your load, the balloon, and the helium) you would need 1449 cubic feet of helium.
Aug 21, 2008· densities: (and this will vary with temperature) Helium gas 0.18 kg/m³. Air 1.28 kg/m³. difference is 1.1 kg/m³. 300 lbs is 136 kg. so lift volume is 136 kg / 1.1 kg/m³ = 124 m³ or 4370 ft³
Oct 15, 2009· Well, a 20 foot diameter cylinder 6 feet high has a volume of 1,884 cubic feet. Helium weighs 0.011 pounds per cubic foot, and air weighs 0.0807 pounds per cubic foot (at STP). I figure the lifting capability to be close to 132 pounds. Assume the balloon and gondola doesn't weigh too much, sure it could lift a small child.
Gas capacity and balloons per helium tank figures are estimates. Actual yield may vary 10% or more. Lift ability figures are calculated at standard temperature and pressure at sea level in an indoor setting. Actual results will vary greatly with inflation size, measurement procedures and accuracy, temperature, elevation and atmospheric conditions.
Jul 17, 2006· Helium has a molecular weight of about 4, and nitrogen (N2) has a molecular weight of about 28. Thus each mole of displaced gas gives you a whopping 24 grams of lift, which is less than one ounce! If you weigh 150 pounds, that's 68,000 grams. That would be . 68,000 / 24 = 2834 moles of helium. 2834 x 5.35 = 15,158 balloons (!!)
Oct 16, 2009· 1 Litre of helium can lift approx 1gram. a cubic foot can lift approx 1 ounce. That balloon has to be pretty big to lift a person! It must be nonsense unless those guys really know how to seal mylar of such large size together.
Sep 14, 2015· How big or how many balloons are needed in order to lift a person or even a truck. Different types of balloons has different capacity. The most common balloons we see is helium balloon. Air weight 1 gram per liter, while helium weight 0.1785 per liter. Helium is much lighter than air so it float in the air . A normal balloon has a diameter of 1 ...
An average sized helium balloon holds about 14 L. An average person is about 80 kg. Helium can lift just about 1 g per L. You would need 80000 L of helium to do the job, so 80000 / 14 = 5714 balloons. Edit: Thanks to those who corrected my ty...
Nov 07, 2013· How many helium-filled balloons would it take to lift a person? Assume the person has a mass of 67kg and that each helium-filled balloon is spherical with a diameter of 33 cm. Please show all work & provide answer. Thank you. (Please note that this requires an …
Jun 17, 2018· So to see how much a Zeppelin can lift we need to look at the mass of the air that it displaces. We can use the ideal gas law to figure that out. ... Max weight without Helium: 8972.0571 kg; Static lift: 1333.562 kg. The is lift create by buoyancy. Max Dynamic lift: 499.85879 kg. Lift …
May 31, 2010· One helium balloon can lift roughly 4.8 grams. Convert 100 pounds into grams and you get 45,359.237g. Divide 45,359.237g by 4.8g, and you get a little less than 9,450 balloons! So, to lift a 100-pound person, you'd need 9,450 balloons. 66 packs of 144 balloons will get you 9,504 balloons. Each pack is $11.52, so the balloons themselves will ...
The density of air at 20ºC at sea level is 1.205 kg/m^3. The density of helium under those same conditions is 0.1664 kg/m^3. The difference between these numbers in the buoyancy of helium, or its lifting force. Some quick mental maths put this num...
Oct 25, 2017· A British thrill-seeker has flown across South Africa strapped to a camping chair carried by 100 balloons.Tom Morgan, 38, drifted nearly 16 miles through the...
Nov 03, 2020· Each cubic foot of helium can lift 0.069 pounds. In order to lift 100 pounds, you would need 1449 cubic feet of helium. To lift a 150lb person, with 50 pounds of basket & balloon would require 2,860 ft³ (about the size of a swimming pool)
Helium is lighter than air and able to lift about one gram per liter of gas. It has a number of industrial uses beyond being a standard at parties. First, we need to know how much the kid weighs ...
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.).
Jun 28, 2018· How many balloons to lift a person. Let's get on with the calculations! As you already learned in the previous section, the lifting force of helium is approximately one gram per liter. It doesn't seem like much, that's why you will need a lot of balloons to start flying! Determine your weight - for …
Apr 01, 2000· So if you have a balloon that contains 5 liters of helium, the balloon can lift 5 grams. Advertisement. Advertisement. A normal balloon at an amusement park might be 30 centimeters (about 1 foot) in diameter. To determine how many liters of helium a sphere can hold, the equation is 4/3 x pi x r x r x r. The radius of a 30-centimeter-diameter ...
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 ...
