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Daniil Bakhin2019-06-27 10:04:26
Physics
Daniil Bakhin, 2019-06-27 10:04:26

Does the horizontal speed of a body flying around the Earth affect the fall time?

According to the formula h=gt^2/2, it can be understood that the height affects the fall time.
But if the body will fly around the earth?

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Oleg Bezh, 2019-06-27
@obezh

The answer to the question is YES. Moreover, the fall time directly depends on the speed of the body. Tie a load to the rope, spin it on your finger and begin to gradually reduce the speed of rotation. Watch how as the speed of the load decreases, the load approaches the finger. Stop the rotation of the hand (finger, thought, no matter how you rotate the rope there). The load will rush to the finger. To heighten the effect, observe in 2d from above (or below) rotating the load horizontally relative to the surface of the earth (it is necessary in order not to pay attention to the force of gravity of the earth, which is many orders of magnitude higher than the force of attraction of a finger)

a drop of school theory
Если любое антропргенное космическое тело ближнего(и не очень) космоса потеряет ускорение, оно просто упадёт(не мгновенно конечно), но не зря ведь существует понятие первая космическая скорость(только первая, вторая к теме вопроса не относится). Первая космическая скорость позволяет цеетробежной силе уравнивать силу гравитации. Допустим, центробежная сила равна 1, сила гравитации равна 1. Тело не падает и не отдаляется от центра вращения, т.к. есть баланс между силой убегания и силой притяжения. Убираем центробежную силу(просто снизив скорость до 0), гравитация остаётся, тело падает.

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