Gravity Equivalence Principle

The cluster focuses on discussions about the nature of gravity, including whether it is a force or spacetime curvature, its equivalence to acceleration per general relativity, and conceptual explanations for laypeople.

📉 Falling 0.4x Science
4,631
Comments
20
Years Active
5
Top Authors
#6330
Topic ID

Activity Over Time

2007
2
2008
9
2009
46
2010
133
2011
129
2012
96
2013
184
2014
150
2015
193
2016
186
2017
196
2018
373
2019
302
2020
499
2021
366
2022
350
2023
515
2024
518
2025
374
2026
10

Keywords

IMO GR nasa.gov PonyTail physicsoftheuniverse.com svs.gsfc wikipedia.org gravity acceleration spacetime force accelerating mass curved forces frame field

Sample Comments

oatsandsugar Nov 8, 2024 View on HN

* Gravity isn't changing, this is about the science of gravity propagating

m3kw9 Jun 16, 2020 View on HN

Can someone explain Why there is gravity without drawing on math?

charlieyu1 Apr 27, 2023 View on HN

The problem is gravity also affects particles with no mass

Rerarom Jul 4, 2019 View on HN

I thought it was achieving gravity by means other than rotation :(

hnuser123456 Oct 13, 2020 View on HN

You're proposing that gravity is stronger in a direction other than the one straight down to the center?

cultureswitch Dec 25, 2022 View on HN

You haven't specified anything about gravity. I'm with ChatGPT on this one.

umvi Apr 17, 2024 View on HN

Maybe because gravity isn't a force at all but a consequence of the curvature of spacetime?

drran Dec 8, 2021 View on HN

It uses gravity force to demonstrate that gravity force is not a force. ;-)

financetechbro Sep 6, 2024 View on HN

Makes you wonder what other things are equally sensitive to gravity

flkiwi Dec 9, 2025 View on HN

This is a big of a gravity vs. acceleration issue, in that the end result is indistinguishable.