Quote:
Originally Posted by zamler
Gravity from what?
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The Sun and the Earth at L2 are pulling the object back toward it.
The satellite is moving perpendicular to the sun and the earth.
The Lagrange 2 point is such that the gravitation pull from the earth and the sun match the centrifugal force of the satellite. Since these forces are equal the satellite stays put.
What is unique about the Lagrange points is that the angular velocity required to create the matching centrifugal force matches the angular velocity of the earth so that the gravitational pull of the sun and earth remains constant throughout the orbit.