Question

A satellite is revolving around earth in a
circular orbit of radius equal to diameter of
earth. The minimum % increase in the speed
of that satellite so that it escapes from earth's
gravity is
​

Answer 1

Answer:

Explanation:

As you say its orbital radius is the diameter of earth which means its diameter is twice the earth's diameter: 12, 747 km so the sattelite's orbiting diameter is 25, 494 km. If earth's g is 9.8 m/s^2 then the force g on the satellite is 4.9 which means that you need to upgrade your speed with at least 50% so the satellite can escape earth!