Question

Why does earth not collapse into the sun and stays in orbit ?

Answer 1

Solution,

Right now and it has been since the formation of our solar system, there are two opposing forces acting on the planets. First is gravitational pull towards Sun in the inward direction, and the centrifugal force of their orbit driving them outwards. If gravity was dominant, the planets would spiral inward. If their inertia was dominant, the planets would spiral outward into deep space. The planets are trying to fly out into deep space, but the gravity of the Sun is pulling them into a curved orbit. That is the reason, they are not collapsing.

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