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Consider 2 lifts ,one on ground and other on acceleration, principle of equivalance says you can't find you are on a gravitational field, or accelerating. g decrease when r increase so I can find which lift on gravitational field ?
If it is a point then how lift experiment could possible,Of course. The equivalence principle, strictly speaking, only applies at a point (any point). It applies approximately over a small region, but over a large enough region curvature becomes apparent.
Because the lift is a small region and the equivalence principle applies approximately. Calculate the different (Newtonian) accelerations at the bottom and top of a typical lift. Could you detect that difference?If it is a point then how lift experiment could possible,
Google for Eddington's measurements during a solar eclipse.And how we can prove light bend by gravity
Sandeep, you don't seem to realize how many of your questions could be answered with a simple Google search: For example:And how we can prove light bend by gravity