# Escape from gravitational field

1. A satellite is revolving very close to earth. what is the % increases in velocity needed to escape from the gravitational field of earth

v= root gh

## The Attempt at a Solution

Sorry, i dont have any solution .

Related Introductory Physics Homework Help News on Phys.org
ehild
Homework Helper
You have to tell us, what you know. What does escape from the gravitational field of the Earth mean? How far can the satellite go away from the Earth with the increased velocity?

BvU
$v = \sqrt{gh}$ isn't good enough: need to escape from earth gravitational field, so $h \rightarrow \infty$