Approximate the gravitational force of attraction between a 59.0 kg girl and a 61.0 kg boy if they are sitting 2.5 m apart in physics class.

Question

*Notice how small the answer is. The boy and girl are certainly not very attracted to each other. This is why the gravitational force between objects is normally ignored when drawing free-body diagrams. The force of gravity is incredibly small unless a very, very large mass is involved (e.g. a planet).

Answer 1

Use the formula F=G(mM)/R^2

G is the gravitational constant and equals 6.67x10^-11

M and m are the masses, so 59kg and 61kg

R is the distance between both: 2.5m

Plug in all values to find F! Good luck