Question

A satellite of mass m revolves around the earth radius R at a height x from its surface . if g is the acceleration due to gravity on the surface of the earth , the orbital speed of the satellite is [AIEEE :-:2004] ​

Answer 1

Explanation:

We have:

R+x

mv

2

=

(R+x)

2

GMm

⇒v=

R+x

GM

=

R

2

GM

×

R+x

R

2

=

R+x

gR

2

because the gravitational force provides the centripetal force for revolution.

Answered by Aditi

Answer 2

Because, the gravitational force provides the centripetal force for revolution.

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