Sun that has a mass of 50 million kilograms and a planet orbiting 20 meters away from the sun with a mass of 1 million kilograms Calculate the period of the planets revolution around its sun in hours

Answer 1

If we assume a circular orbit, the period T in seconds is given by

T = 2π√ (R³/GM).

R = radius of orbit in meters

G = gravitational constant in appropriate units (Nm²/kg²)

M is mass of the sun

T will be in seconds, so divide by 3600 to get it in hours.