A student uses the orbital period and radius of a moon to compute the mass of its planet
PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
A student uses the orbital period T and radius r of a moon to compute the mass of its planet. If the measured value of T is mistakenly taken to be twice its actual value while r is correct, the mass obtained will be
(a) twice the true mass
(b) one-fourth of the true mass
(c) one-half of the true mass
(d) one-eighth of the true mass