Question
(a) Based on Kepler's laws and information on the orbital characteristics of the Moon, calculate the orbital radius for an Earth satellite having a period of 1.00 h. (b) What is unreasonable about this result? (c) What is unreasonable or inconsistent about the premise of a 1.00 h orbit?

$5090 \textrm{ km}$

This is unreasonable since the radius it is less than the Earth's radius of $6376 \textrm{ km}$. A $1 \textrm{ h}$ orbital period is not possible.

Solution Video