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Questions and Answers
According to the law of gravitation, the force of attraction between two objects is proportional to:
According to the law of gravitation, the force of attraction between two objects is proportional to:
The force of gravity decreases with altitude because:
The force of gravity decreases with altitude because:
The weight of an object is equal to the product of its:
The weight of an object is equal to the product of its:
What happens to an object when it is immersed in a fluid with a density less than its own?
What happens to an object when it is immersed in a fluid with a density less than its own?
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How does the force of gravitation vary on the surface of the Earth?
How does the force of gravitation vary on the surface of the Earth?
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Study Notes
Law of Gravitation
- The force of attraction between two objects is directly proportional to the product of their masses.
- This means that as either mass increases, the gravitational force increases.
Force of Gravity and Altitude
- The force of gravity decreases with altitude due to the increase in distance from the Earth's center.
- At higher altitudes, the gravitational pull diminishes as the distance increases, leading to reduced gravitational force.
Weight of an Object
- The weight of an object is equal to the product of its mass and the acceleration due to gravity (W = mg).
- Weight is a force measured in newtons and varies depending on the gravitational field strength.
Immersion in Fluids
- When an object is immersed in a fluid with a density less than its own, it will float or remain suspended.
- This principle relates to buoyancy, where the upward buoyant force is less than the object's weight.
Variation of Gravitational Force on Earth's Surface
- The force of gravitation varies slightly across the Earth's surface due to its shape and rotation.
- Gravitational force is stronger at the poles compared to the equator because of the Earth's oblateness and the effects of centrifugal force.
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Description
Test your knowledge of the law of gravitation and its effects on different masses and altitudes. Understand the principles governing the force of attraction between objects and how it varies across the universe.
