Concept explainers
Referring to the previous problem, find the volume of the displaced air.
The displaced volume of air.
Answer to Problem 63A
The volume of displaced air is
Explanation of Solution
Given:
The buoyant force acting on the balloon is equal to the weight of the displaced air.
The weight of the displaced air in the balloon is
Formula used:
The buoyant force acting on the balloon is given as follows:
Here,
Rearrange the equation for
Calculation:
The buoyant force acting on the balloon will be equal to the displaced air weight.
The balloon is neither accelerating upward nor downward, so the net force acting on it will be zero. The upward buoyant force will be equal to the weight of the balloon including the hot air. Therefore, the weight of the displaced air in the balloon is
Substitute
Conclusion:
Therefore, the volume of displaced air is
Chapter 20 Solutions
Conceptual Physics: The High School Physics Program
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