With what force are bodies weighing 15 kg and 40 kg attracted to each other at a distance of 4 km from each other?

Initial data: m1 (mass of the first body) = 15 kg; m2 (mass of the second body) = 40 kg, R (distance between two bodies) = 4 km.

Constants: G (gravitational constant) = 6.67 * 10 ^ -11 m ^ 3 / (kg * s ^ 2).

SI system: R = 4 km = 4 * 1000 m = 4000 m.

We calculate the force of attraction of two given bodies using the following formula:

F = G * m1 * m2 / R ^ 2.

Let’s do the calculation:

F = 6.67 * 10 ^ -11 * 15 * 40/4000 ^ 2 ≈ 2.5 * 10 ^ -15 N = 2.5 lb.

Answer: Bodies will pull at 2.5 lb.