Massive objects and relativistic effects

In summary, a sphere with a radius of 4 kilometers and a mass of 2 suns is observed moving at a speed of 0.866c. From the sphere's frame of reference, its mass is equivalent to 1 sun's mass, with a radius of 4 kilometers and a velocity of 0. The question arises whether light can escape from such an object and if the concept of escaping is relative. However, all observers agree on the paths of particles, and the physical object does not change despite the observer's movement. It is important to understand that the derived formulas do not fully encompass the complexity of the physics involved.
  • #1
Myslius
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5
A sphere with the radius of 4 kilometers and a mass of 2 suns moves to observer at the speed of 0.866c. From sphere frame of reference it's mass is 1 sun's mass, radius 4 kilometers and velocity 0. Can light escape from such object? Does escaping is also relative? How about direction of light, does it matter?
 
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  • #2
No it's not relative. All observers agree on what kind of paths particles move on. The physical object does not change even if you move with respect to it.

Here you are confusing the simple derived formulas (regarding Schwarzschild radius and all that) with the actual physics (Einstein field equations and geodesic equations). If you started from the beginning, there would be no confusion.
 

Related to Massive objects and relativistic effects

1. What is the concept of mass in relation to massive objects?

The concept of mass refers to the amount of matter an object contains. In the context of massive objects, mass is a measure of how much energy is required to accelerate the object. The more massive an object is, the more energy is needed to move it.

2. How does the theory of relativity explain the behavior of massive objects?

The theory of relativity, specifically Einstein's theory of general relativity, explains the behavior of massive objects by describing the relationship between matter, energy, space, and time. It states that massive objects, such as planets and stars, curve the fabric of space-time, causing objects to move along curved paths.

3. What is the significance of relativistic effects on massive objects?

Relativistic effects on massive objects are significant because they can cause deviations from the laws of classical mechanics, which were thought to be absolute before the development of the theory of relativity. These effects are especially important when dealing with objects that are moving at high speeds or have very strong gravitational fields.

4. How do relativistic effects impact our understanding of the universe?

Relativistic effects have had a major impact on our understanding of the universe. They have led to advancements in our understanding of gravity, the behavior of light, and the structure of the universe. Relativistic effects also play a crucial role in phenomena such as black holes, gravitational waves, and the expansion of the universe.

5. Can we observe relativistic effects on a daily basis?

Yes, we can observe relativistic effects on a daily basis, although they may not be noticeable to the naked eye. For example, the Global Positioning System (GPS) relies on the theory of relativity to adjust for time dilation caused by the satellites' high speeds. Additionally, nuclear power plants and medical devices also utilize the principles of relativity in their operations.

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