F GMm r2 F G Mm r 2. Every object in the universe attracts every other object with a force along a line joining them. The solution of the problem involves substituting known values of G 6673 x 10 -11 N m 2 kg 2 m 1 598 x 10 24 kg m 2 70 kg and d 639 x 10 6 m into the universal gravitation equation and solving for F grav.
F g G m 1 m 2 r 2.
According to Newtons Law of gravitation these particles will attract each other by a force F such that Where G is a constant of proportionality and known as Universal gravitation constant. This principle can be expressed in the equation. The value for Universal law of gravitation is. The measured value of the constant is known with some certainty to four significant digits.