Joe has a mass of 50 kg and Sally has a mass of 30 kg. They sit in class with a separation of 0.5 meters. Find the gravitational attraction between Joe and Sally.

Use Newton's universal law of gravity, with the constant G

F = G*m1*m2/R^2

R should be in meters, and masses in kg, if you want the force in Newtons. Look up the value of G if your don't know it. It is NOT the same as g.

To find the gravitational attraction between Joe and Sally, we can use the formula for calculating the gravitational force:

F = (G * m1 * m2) / r^2

Where:
F is the gravitational force,
G is the universal gravitational constant (approximately 6.674 × 10^-11 N m^2/kg^2),
m1 and m2 are the masses of the objects (Joe and Sally, respectively),
and r is the distance between the centers of the masses.

Given:
m1 (mass of Joe) = 50 kg
m2 (mass of Sally) = 30 kg
r (separation between Joe and Sally) = 0.5 meters

Plugging the values into the formula, we get:

F = (6.674 × 10^-11 N m^2/kg^2 * 50 kg * 30 kg) / (0.5 meters)^2

Now let's calculate the gravitational attraction between Joe and Sally.