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Space Time Curvature and the TRampoline analogy

In the trampoline demonstration representing space-time and gravity, it is obviously the friction between the trampoline and the ball that determines the path of the ball. Friction is a physical interaction, so space-time has to physically interact with matter for this demonstration to be a plausible description of what is happening actually. My question is, what is or what causes that physical interaction or “friction” between space-time and matter when space-time is curved?? Thank you

Asked Jason Omahne

 

Answer:

The trampoline is just an analogy to understand the phenomenon. Gravity is like the depression of the trampoline causing a curvature in the space time continuum.

The curvature of spacetime around the source o...
The curvature of spacetime around the source of the gravitational force (Photo credit: Wikipedia)

(You may ask further related doubts as comments to this post.)

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