To know how many Helium balloons are needed to lift a girl who
weighs 35 kg, one intends to measure how much weight a single
balloon can lift. A scale that is sensitive to 0.1 g, small pieces
of copper, and an ordinary party balloon show that a balloon with a
volume of about 2 l can lift 2g of copper.
How many balloons will it take to lift the girl?
Does this agree with the result obtained if you use Archimedes'
principle and know that the air density at 20∘C is 1.2 kg / m3 and
the density of helium is 0.17 kg / m3?
To know how many Helium balloons are needed to lift a girl who weighs 35 kg,...
Balloons are often filled with helium gas because it weighs only about one seventh of what air weighs under identical conditions. The buoyancy force, which can be expressed as Fb Pairg Vballoon. will push the balloon upward. The balloon has a diameter of 9 m Assume the density of air is ρ 116 kg/m3 and the density of helium gas to be 1/7th of this Neglect the weight of the ropes and the cage. Determine the maximum amount of Joad,...
How many helium-filled balloons would it take to lift a person? Assume the person has a mass of 69 kg and that each helium-filled balloon is spherical with a diameter of 33 cm.
12) Consider a party balloon filled with helium with a small mass m hanging from it, as depicted in Figure 2. The balloon can be approximated as a sphere with volume V = 0.035 m. The mass of the rubber and string (i.e. the balloon's mass when it is not filled with helium) is 0.0025 kg. a) If the balloon with the mass hanging is floating in equilibrium, what is the value of the hanging mass? Suggestion: Write Newton's Second...