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## Homework Statement

A science group put in a satellite of mass m kg into a circular earth orbit of radius r. The orbital velocity it needs to remain in this orbit is v. They now put another satellite into a similar orbit at the same altitude. Its mass is 3 times m. What orbital velocity would it need to be given? Give reasons using mathematical reasoning.

## Homework Equations

Newton's law v = 2pi x r/T

## The Attempt at a Solution

v^2/r=G m/r^2

Satellite 1:

v=√(G m/r)

Satellite 2:

v=√(G 3m/r)