Gravity on Earth: Explaining Trampoline Warping & Tides

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Discussion Overview

The discussion explores the nature of gravity on Earth, particularly in relation to the analogy of a trampoline and how this relates to the experience of gravity at different locations, such as the poles. It also touches on the implications of gravity for phenomena like tides influenced by the moon's gravitational pull.

Discussion Character

  • Exploratory, Conceptual clarification

Main Points Raised

  • One participant questions how gravity, described as the warping of space, operates on Earth, particularly regarding the experience of gravity at the poles compared to the trampoline analogy.
  • Another participant suggests that spacetime is not accurately represented by the trampoline analogy, implying a need for a more nuanced understanding.
  • Links to external resources are provided by participants, suggesting they may offer helpful insights into general relativity and gravity.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the trampoline analogy for gravity, with differing views on its applicability and accuracy. The discussion remains open-ended with multiple perspectives presented.

Contextual Notes

The discussion does not resolve the complexities of how gravity functions in different locations on Earth or how it relates to tidal forces, leaving several assumptions and definitions unaddressed.

Aman Trivedi
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If gravity is the warping of space, how does it work on Earth for us? Imagine a trampoline (the most common example for describing gravity) when a bowling ball is kept on a trampoline the weight of the ball forces the trampoline to stretch, but on our planet the gravity works downward on the land regardless of where we are. On the trampoline the whatever is kept below the ball won't feel the downward force, only things that are on top. Then how does gravity work on Earth, and that too on both the poles? Also how does the warping of space justify tides that occur from moons gravitation pull on earth? Albert Einstein's concept of gravity always made sense to me, but only on a larger scale. But when I think about how people on the South Pole and the North Pole feel a downward gravitation, it means the ball warps the trampoline from
North and South, how could that be possible? Ps I haven't really studied general relativity yet, as I'm still doing my IGCSE. Though my curiosity for the cosmos made me stumble upon this. Thank you :)
 
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And, spacetime is, strangely enough, not a trampoline!
 

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