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Gravity is an attractive force that affects and is affected by all mass and - in general relativity - energy, pressure, and stress. Prefer newtonian-gravity or general-relativity if sensible.

5 votes
5 answers
2k views

Can gravitational wave create anti-gravity, i.e. repulsive gravity?

Like every wave having a negative side, can a gravitational wave have anti-gravity. …
Sreekumar R's user avatar
0 votes
0 answers
67 views

Gravity at event horizon [duplicate]

To find the gravity at Schwarzschild radius of a black hole, I used the below equations. … Schwarzschild radius of ${\frac{2GM}{c^2}}$ for r we get $$ g = {\frac{c^4}{4GM}} $$ Just thinking on a time dilation perspective, I have also read that acceleration can not be distinguished from gravity
Sreekumar R's user avatar