Universal Law of Gravitation Video Lessons

Concept

# Problem: Two uniform spheres, each with mass M and radius R, touch one another. What is the magnitude of their gravitational force of attraction? Express your answer in terms of the variables M, R, and appropriate constants.

###### FREE Expert Solution

Gravitational force,

$\overline{)\begin{array}{rcl}{\mathbf{F}}& {\mathbf{=}}& \mathbf{G}\frac{{\mathbf{m}}_{\mathbf{1}}{\mathbf{m}}_{\mathbf{2}}}{{\mathbf{r}}^{\mathbf{2}}}\end{array}}$

m1 = m2 = M

###### Problem Details

Two uniform spheres, each with mass M and radius R, touch one another. What is the magnitude of their gravitational force of attraction? Express your answer in terms of the variables M, R, and appropriate constants.