Question

The orbital radius of the earth is 1.5 *1013cm calculate the mass of sun

Answer 1

In this equation, we know G, because it is a constant. However, we need to know how far the Earth is from the Sun and how fast it is moving around the Sun. The distance separating the Earth and the Sun (the orbital radius of the Earth around the Sun), r, is 1.5 × 108 km.May 5, 2016