(a)[2]
State Newton’s law of gravitation in words.
(b(i))[2]
By reference to forces, explain why the satellite moves in a circular orbit.
(b(ii))[3]
Use Newton’s law of gravitation to demonstrate that $h$ and $T$ satisfy $(h + B)^{3} = \frac{GA}{4\pi^{2}} T^{2}$, where $G$ is the gravitational constant and $A$ and $B$ are constants depending on the planet’s properties.
(b(iii))[5]
Use the gradient and intercept from Fig. 1.1 to work out $A$ and $B$. Include units in your answers.