By burning the substance, or by digesting it.
Recall that

The car starts from rest, so
, and we get

To solve this problem we will apply the given concept for torque which explains the relationship between the force applied and the distance to a given point. Mathematically this relationship is given as

Where,
Torque
F = Force
d = Distance
Our values are given as,

Therefore replacing we have that the force is

F = 12.72N
Therefore the least amount of force that you must exert is 12.72N
To solve this problem it is necessary to use the concepts related to the Gravitational Force and Newton's Second Law, as far as we know:

Where,
G = Gravitational constant
M = Mass of earth (in this case)
m = mass of satellite
r = radius
In the other hand we have the second's newton law:

Where,
m = mass
a = acceleration
Equation both equations we have,

For the problem we have that,
<em>Satellite A:</em>

<em>Satellite B:</em>

The ratio between the two satellites would be,

Solving for a_B,

Therefore the centripetal acceleration of
is a quarter of 