Inside a satellite orbiting very close to the earth’s surface, water does not fall out of a glass when it is inverted. Which of the following is the best explanation for this
Correct Answer :
The gravitational attraction between the glass and the water balances the earth’s attraction on the wate
Solution :
The correct answer is: The gravitational attraction between the glass and the water balances the earth’s attraction on the wate
To understand this explanation, let us analyze the forces acting on the water inside the glass inside the satellite:
1. Earth's Gravitational Attraction: The Earth exerts a downward gravitational force pulling the water towards its center. This force is given by:
where is the gravitational constant, is the mass of the Earth, is the mass of the water, and is the orbital radius.
2. Attraction between the Glass and Water: In this proposed scenario, the local gravitational attraction between the mass of the glass and the mass of the water acts to hold the water within the glass.
3. Force Balance: For the water to remain stationary relative to the glass, the gravitational pull between the glass and the water must equal the gravitational pull of the Earth:
Since these two forces balance each other out, there is no net force pulling the water out of the inverted glass, preventing it from falling.
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