Moon A orbits a certain planet at a radius of with a period of 1.0 planetary day (86…

PHYSICS · Subjective · CBSE · Physics · Gravitation · Gravitation

Problem

Moon A orbits a certain planet at a radius of

2.0\times10^{8}\,\text{m}

with a period of 1.0 planetary day (86 400 s). Moon B orbits the same planet at

4.0\times10^{8}\,\text{m}

. Determine the orbital period of Moon B in days, to two significant figures.