The total weight o a gas filled balloon is 1500N.

AI Thread Summary
The total weight of the gas-filled balloon is 1500N, and it rises at a constant speed of 10m/s. Since the speed is constant, the acceleration is zero, indicating that the net force acting on the balloon is also zero according to Newton's second law. This means the buoyant force must equal the weight of the balloon, which is 1500N, allowing it to float. The discussion emphasizes the relationship between weight, buoyant force, and constant velocity in the context of physics principles. Understanding these concepts is crucial for solving similar problems in mechanics.
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Homework Statement



The total weight o a gas filled balloon is 1500N.THE BALLOON RAISES AT CONSTANT SPEED OF 10m/s.Calculate the resultant force acting on the balloon?

Homework Equations





The Attempt at a Solution

 
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VICKZZA said:

Homework Statement



The total weight o a gas filled balloon is 1500N.THE BALLOON RAISES AT CONSTANT SPEED OF 10m/s.Calculate the resultant force acting on the balloon?

Homework Equations





The Attempt at a Solution


If the speed is constant, what does that mean about the acceleration? What does Newton's 2nd Law therefore say about the net force on the object?
 


as given that the speed is constant ,so there is no acceleration in the ballon.and according to Newton 2nd law,force acting on the object is directly proportional to mass of the objectand accelaration,now if we consider this, the net force will be equal to zero.

but i am still confused,am i right?
 
VICKZZA said:
as given that the speed is constant ,so there is no acceleration in the ballon.and according to Newton 2nd law,force acting on the object is directly proportional to mass of the objectand accelaration,now if we consider this, the net force will be equal to zero.

but i am still confused,am i right?

Yeah that's right. The net force has to be 0. So something has to provide lift to counteract the weight of the balloon. In this case it's the buoyant force that does so (i.e. the balloon floats).
 


but how much magnitude of buoyant foce will be there when balloon continously arises up?
 


Hmm. Balloon weighs 1500 N. Rises with constant velocity. Net Force = 0. What is the buoyant force? Eureka!, Mr. Archimedes!
 

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