Question

Orbital radius of a satellite s of earth is four times that of a communication satellite c period of revolution is s is

Answer 1

Answer:

8 days

Explanation:

Time period of satellite depends only on radius of orbit and mass of the planet.

Using Kepler's law, T

2

∝R

3

Let r be the radiius of communication satellite. Time period T

1

is 1 day.

Thus,

T

1

2

T

2

2

=

r

3

(4r)

3

⟹T

2

=8T

1

=8days

Answer 2

Answer:

1. ................................,.........