Question

How long will it take Mars to complete one full orbit? Mars is 228 million kilometers

away from the sun. The sun has a mass of 1.99 x 10^30 kg.

Answer 1

r = 2.28 x 10⁸ m

m = 1.99 x 10³⁰ kg

T = 4π²r³/G.m

T = 4π² (2.28 x 10⁸)³/(6.67 x 10⁻¹¹ x 1.99 x 10³⁰)

T = 3.53 x 10⁶ s