GENERAL KNOWLEDGE

GK

PHYSICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Finish this phrase “Matter tells spacetime how to curve, spacetime tells matter how to ____ “
A
move
B
collapse
C
expand
D
rest
Explanation: 

Detailed explanation-1: -This is the core of Einstein’s theory of general relativity, which is often summed up in words as follows: “matter tells spacetime how to curve, and curved spacetime tells matter how to move".

Detailed explanation-2: -When a smaller mass passes near a larger mass, it curves toward the larger mass because spacetime itself is curved toward the larger mass. The smaller mass is not “attracted” to the larger mass by any force. The smaller mass simply follows the structure of curved spacetime near the larger mass.

Detailed explanation-3: -In general relativity, spacetime is not ‘flat’ but is curved by the presence of massive bodies. This artistic representation visualises spacetime as a simplified, two-dimensional surface, which is being distorted by the presence of three massive bodies, represented as coloured spheres.

Detailed explanation-4: -Gravity is the curvature of spacetime Gravity is the curvature of the universe, caused by massive bodies, which determines the path that objects travel. That curvature is dynamical, moving as those objects move.

Detailed explanation-5: -The idea that spacetime is distorted by motion, as in special relativity, is extended to gravity by the equivalence principle. Gravity comes from matter, so the presence of matter causes distortions or warps in spacetime. Matter tells spacetime how to curve, and spacetime tells matter how to move (orbits).

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