Answer
396.9k+ views
Hint: To answer this question, we have to apply the concepts of buoyancy. The relative density of an object compared to the medium in which it is placed decides whether the object will float or sink. A less dense object in a denser medium will float and vice versa.
Complete step by step answer:
The balloon initially rises in the air because the weight of the displaced air i.e., upthrust is greater than the weight of the helium and the balloon. This force is similar to the force experienced when an empty container is dipped in water.
The difference in densities causes the less dense object to be pushed above. Since the density of air decreases with height therefore the balloon halts at a particular height. At this particular point, the density of the air will be equal to the density of the helium inside the balloon.
The force acting on the balloon downwards that is the weight of the balloon will be balanced by the buoyant force acting on the balloon at this particular point. Hence the net force acting on the balloon will be cancelled out and the balloon stops rising.
Note: Here, we can treat the helium inside the balloon as a liquid to apply the principles of buoyancy. Helium is less dense than air at the ground i.e., at atmospheric pressure near the ground so it will rise up. Atmospheric pressure decreases with height as Earth’s gravity gets weaker with increasing height. However, helium balloons are so light that they can be easily displaced by the wind in which case the dominant force will be the wind of the balloon and not buoyant force.
Complete step by step answer:
The balloon initially rises in the air because the weight of the displaced air i.e., upthrust is greater than the weight of the helium and the balloon. This force is similar to the force experienced when an empty container is dipped in water.
The difference in densities causes the less dense object to be pushed above. Since the density of air decreases with height therefore the balloon halts at a particular height. At this particular point, the density of the air will be equal to the density of the helium inside the balloon.
The force acting on the balloon downwards that is the weight of the balloon will be balanced by the buoyant force acting on the balloon at this particular point. Hence the net force acting on the balloon will be cancelled out and the balloon stops rising.
Note: Here, we can treat the helium inside the balloon as a liquid to apply the principles of buoyancy. Helium is less dense than air at the ground i.e., at atmospheric pressure near the ground so it will rise up. Atmospheric pressure decreases with height as Earth’s gravity gets weaker with increasing height. However, helium balloons are so light that they can be easily displaced by the wind in which case the dominant force will be the wind of the balloon and not buoyant force.
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Why Are Noble Gases NonReactive class 11 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let X and Y be the sets of all positive divisors of class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x and y be 2 real numbers which satisfy the equations class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x 4log 2sqrt 9k 1 + 7 and y dfrac132log 2sqrt5 class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x22ax+b20 and x22bx+a20 be two equations Then the class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Trending doubts
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
At which age domestication of animals started A Neolithic class 11 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Which are the Top 10 Largest Countries of the World?
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Give 10 examples for herbs , shrubs , climbers , creepers
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference Between Plant Cell and Animal Cell
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Write a letter to the principal requesting him to grant class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Change the following sentences into negative and interrogative class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Fill in the blanks A 1 lakh ten thousand B 1 million class 9 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)