Answer to Question #110321 in Electric Circuits for Aliyu Almustapha Usman

Question

Calculate the force of attraction between a star of mass 20.00*10^30kg and the earth assuming the star is located 1.50*10^8km from the earth

Answer 1

The Newton's law of gravitation says

$$F=G\frac{m_1m_2}{r^2}\\ =6.67\times 10^{-11}\frac{20.00\times 10^{30}\times 5.97\times 10^{24}}{(1.50\times 10^{11})^2}\\ =3.54\times 10^{23}\:\rm N$$