Physics

Problem

The energy required to take a satellite to a height

h

above Earth surface (radius of Earth

= 6.4\times 10^3

km) is

E_1

and kinetic energy required for the satellite to be in a circular orbit at this height is

E_2

. The value of

h

for which

E_1

and

E_2

are equal, is: (1)

1.28\times 10^4\,\text{km}

(2)

6.4\times 10^3\,\text{km}

(3)

3.2\times 10^3\,\text{km}

(4)

1.6\times 10^3\,\text{km}