Two satellites, P P\,P and QQQ, orbit a planet of mass M M\,M in stable circular orbits. The mass of satellite P P\,P is three times the mass of satellite QQQ (mP=3mQm_P = 3m_QmP=3mQ), and the orbital radius of P P\,P is four times the orbital radius of QQQ (rP=4rQr_P = 4r_QrP=4rQ).
What is the ratio of the kinetic energy of P P\,P to the kinetic energy of QQQ, Ek,PEk,Q\displaystyle \frac{E_{k,P}}{E_{k,Q}}Ek,QEk,P?
0.18750.18750.1875
0.750.750.75
1.51.51.5
12.012.012.0
