Question

A space vehicle of mass m is in a circular orbit of radius 2r about the earth

Answer 1

According to the question, we have

Mass of the space Vehicle = m

Radius of its Orbit = 2r

Now the speed with which it will move in its orbit is given by

$Orbital Velocity = \sqrt{\frac{(Gravitational Constant)(Mass of Earth)}{Distance of object from the Center of the Earth} }$

So

$Orbital Velocity = \sqrt{\frac{G.M}{2r} }$

where

G = Gravitational Constant

M = Mass of the Earth

2r = Radius of the orbit (given)

Answer 2

Answer:

complete the question first,then post it