A satellite is revolving in a circular orbit at a height ' ' from the earth's surface…
PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
A satellite is revolving in a circular orbit at a height ' h ' from the earth's surface (radius of earth R ; h≪R ). The minimum increase in its orbital velocity required, so that the satellite could escape from the earth's gravitational field, is close to : (Neglect the effect of atmosphere.) [Main 2016]
(1) gR/2
(2) gR(2−1)
(3) 2gR
(4) gR