Find the period of revoluition of planet Mars about the sun if mean distance of the Mars from the sun is 1.52AU.

Answer

1.87 year

Explanation

`T_m = ?, R_m = 1.52 A.U., T_e = 1yr , R_e = 1AU.`
`As (T_m^2)/(T_e^2) = ((R_m)/(R_e))^3`,
`T_m = ((R_m)/(R_e))^(3//2)xxT_e = ((1.52)/(1))^(3//2)xx1yr.`
=1.87yr