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Questions and Answers
Which of the following best describes free fall in the context of general relativity?
Which of the following best describes free fall in the context of general relativity?
- A body falling downwards under the force of gravity
- A body moving upwards under the force of gravity
- A body experiencing no force except gravity (correct)
- A body experiencing weightlessness due to gravity
What is the condition required for an object to be considered in free fall?
What is the condition required for an object to be considered in free fall?
- Subject to only the force of gravity (correct)
- Moving upwards under the force of gravity
- Subject to no forces at all
- Moving downwards under the force of gravity
Which of the following is an example of an object in free fall?
Which of the following is an example of an object in free fall?
- An object subject to no forces
- An object subject to multiple forces
- An object moving upwards under the force of gravity
- An object moving downwards under the force of gravity (correct)
What happens to the sensation of weight when a body is in free fall and there are no other forces acting on it?
What happens to the sensation of weight when a body is in free fall and there are no other forces acting on it?
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Which of the following best describes the Moon's motion around the Earth?
Which of the following best describes the Moon's motion around the Earth?
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Study Notes
Free Fall in General Relativity
- Free fall in the context of general relativity is the motion of an object under the sole influence of gravity, without any other forces acting on it.
Conditions for Free Fall
- An object is considered in free fall when it is under the sole influence of gravity, with no other forces acting on it.
Examples of Free Fall
- An object dropped from rest in a uniform gravitational field, such as an object dropped from the surface of the Earth, is an example of an object in free fall.
Weightlessness in Free Fall
- When a body is in free fall and there are no other forces acting on it, the sensation of weight is zero, as the body is accelerating downward at the same rate as the gravitational force.
Moon's Motion around the Earth
- The Moon's motion around the Earth is an example of a orbit, which is a stable trajectory that is influenced by the gravitational force of the Earth, but not in free fall.
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