PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
For every planet orbiting the Sun, the ratio a3T2 (where T is the orbital period and a is the semi-major axis) is
(a) directly proportional to the planet’s mass
(b) greater for planets that are farther from the Sun
(c) the same constant for all planets
(d) zero for perfectly circular orbits