Planet A revolves around the Sun in a nearly circular orbit of mean radius

PHYSICS · Multi-part · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

r_A

. Planet B revolves in a circular orbit of mean radius

r_B = 4r_A

. (i) Write the relation connecting the orbital periods

T_A

and

T_B

with their respective orbital radii. (ii) Find the ratio

\dfrac{T_B}{T_A}

. (iii) If Planet A completes one revolution in

88\,\text{days}

, calculate the orbital period of Planet B in Earth days.