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

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Homework Help Overview

The problem involves a gas-filled balloon with a total weight of 1500N that rises at a constant speed of 10m/s. Participants are exploring the implications of constant speed on the forces acting on the balloon, particularly in relation to Newton's laws of motion.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants discuss the relationship between constant speed and acceleration, questioning what this implies for the net force acting on the balloon. Some express confusion about the implications of Newton's second law in this context.

Discussion Status

The discussion is active, with participants considering the balance of forces acting on the balloon. Some have suggested that the net force is zero due to the constant speed, while others are exploring the concept of buoyant force as it relates to the weight of the balloon.

Contextual Notes

Participants are navigating assumptions about the forces involved, particularly the buoyant force that counteracts the weight of the balloon. There is an emphasis on understanding the implications of constant velocity in relation to net force and acceleration.

VICKZZA
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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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