I have been thinking deeply about the post on ‘TimeSpace’ by Jim Franklin (#4) in the thread ‘Dark Matter Revisited’ in Cosmology. I have been considering whether gravity would really affect matter in such a way as to cause time dilation. After much thought, I have concluded that it is doubtful. It is well established that gravity affects time, as clocks (and everything else) tick slower in strong gravitational fields. But let's consider deep space.
In deep space, far from any significant celestial bodies, a 100 kg object would exert essentially no gravitational pull because there is no nearby mass to interact with gravitationally. This would result in a negligible gravitational force, essentially zero.
Given this, what happens if such a 100 kg body were accelerated to 0.9c? The relativistic mass can be found using the equation:
m_r = m_o/(sqrt{1 – (v^2)/(c^2))
Where:
m_o = 100 kg
c= 3×10^8 m/s
v=0.9 c
Calculating:
m_r = 100/(sqrt(1 – (0.9c^2)/(c^2) (100)/(sqrt(1 - 0.81)) = (100)/( sqrt 0.19)) ≈232 kg
This gives a relativistic mass of about 232 kg, which corresponds to an increase of approximately 132 kg from the rest mass.
With this in mind, would time dilate under these circumstances? It seems there is room for doubt. However, if time dilation is not the cause of cosmic expansion, what then is the explanation? The idea of cosmic expansion might be flawed, especially since the equations used to describe it are not linear. This suggests the data may be skewed to fit certain models."
In deep space, far from any significant celestial bodies, a 100 kg object would exert essentially no gravitational pull because there is no nearby mass to interact with gravitationally. This would result in a negligible gravitational force, essentially zero.
Given this, what happens if such a 100 kg body were accelerated to 0.9c? The relativistic mass can be found using the equation:
m_r = m_o/(sqrt{1 – (v^2)/(c^2))
Where:
m_o = 100 kg
c= 3×10^8 m/s
v=0.9 c
Calculating:
m_r = 100/(sqrt(1 – (0.9c^2)/(c^2) (100)/(sqrt(1 - 0.81)) = (100)/( sqrt 0.19)) ≈232 kg
This gives a relativistic mass of about 232 kg, which corresponds to an increase of approximately 132 kg from the rest mass.
With this in mind, would time dilate under these circumstances? It seems there is room for doubt. However, if time dilation is not the cause of cosmic expansion, what then is the explanation? The idea of cosmic expansion might be flawed, especially since the equations used to describe it are not linear. This suggests the data may be skewed to fit certain models."
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