All Questions
10
questions
0
votes
4
answers
41
views
Measurement of the velocity of a celestial body by means of (relativistic and classical) gravitational effects on clocks
Imagine a planet with the same properties as Earth, this time moving in an elliptical orbit around a black hole of a large number of solar masses. Also imagine that the surface of this planet is as ...
- 1
0
votes
1
answer
155
views
Is 'rest mass' same for every observer/perspective? [duplicate]
(This is a quick one)
Suppose Im standing still (in my perspective) and a hoverboard is flying at $0.8c$ w.r.t me.
I see that the ball (red) is moving at $0.8c$. I measured earlier that the ball is $...
- 1,305
0
votes
0
answers
45
views
For a travelling object, does the rest of the universe will have relativistic mass?
We know everything is stationary in its frame of reference no matter how much speed it has. Yet if the object is moving with relativistic speed; in its frame of reference the whole universe is moving ...
- 22
3
votes
6
answers
1k
views
Mass definition
One definition of mass is 'a measure of the quantity of matter in an object at rest relative to the observer'. What do 'at rest' and 'relative to the observer' mean here? I know it has to do with mass ...
0
votes
2
answers
95
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Does increase in relativistic mass with speed violate principle of relativity?
From special relativity we know that,
$$ m = \frac{m_0}{\sqrt {1-\frac {v^2}{c^2}}} $$
where,
$m$, $m_{0}$ and $v$ are the relativistic mass, rest mass of the object and speed relative to the observer ...
0
votes
1
answer
74
views
Massless particles and time synchrony
Someone once tried to explain to me why neutrino oscillation implies that neutrinos have mass, and I understood it as follows:
Change requires time.
Massless particles travel at the speed of light.
...
- 1
1
vote
1
answer
100
views
Relativity and mass increase
Consider a long bridge which can marginally tolerate the weight of a car when it is parked on it. If this car has to go over this bridge with relativistic speed which increases its mass/weight above ...
- 51
0
votes
2
answers
125
views
Will my mass increase in my perspective while approaching near the speed of light?
Suppose I start my journey by a spaceship accelerate the velocity to 0.7c from Earth. Now the question arises that-
Will my mass increase gradually as I'm going to a speed of .7c in my perspective and ...
- 11
4
votes
2
answers
30k
views
Increase in Mass with Velocity [duplicate]
I just had a confusion. Does the mass of the body actually increase when it is moving with a certain velocity? Or does it only look like the mass has increase to another observer. How can the actual ...
- 2,479
2
votes
1
answer
3k
views
Does the increase of (relativistic) mass, while flying near speed of light, has any impact on astronauts? [duplicate]
Possible Duplicate:
Would travelling at relativistic speeds have any impact on human biology?
I am asking myself this question for a few days. What is the correct answer on: Does the increase of (...
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