
Concept explainers
To identify: Whether there will be any change in the stick’s balance.
If yes, then to state the direction of tipping.

Answer to Problem 32A
Yes, there will be change in stick’s balance.
The stick will move upwards at the end where the punctured balloon is suspended. Thus, the suspended unharmed balloon will move downwards and so will be the stick’s end.
Explanation of Solution
Introduction:
Buoyant forces are the forces exerted on an object when suspended in the fluid to balance with the amount of fluid displaced.
A balloon rises when the pressure inside the balloon is lighter as compared to the surrounding air. When two balloons are filled with the air of more dense pressure compared to the surrounding air, then in spite of going up, it goes down. Since the pressure inside is higher than the surrounding air.
Now, when a balloon is punctured, then the air inside releases in the atmosphere, cause the change in pressure. Here, the loss in buoyant forces will be lesser than the downward force exerted by its weight due to highly compressed air. Thus, this portion of the stick will go up and another end with an unharmed balloon will go down.
Conclusion:
Thus, the stick will move upwards at the end where the punctured balloon is suspended. Thus, the suspended unharmed balloon will move downwards and so will be the stick’s end.
Chapter 20 Solutions
Conceptual Physics: The High School Physics Program
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