With what force two cars of 80 tons each are attracted, if the distance between them is 100 m.

Initial data: m1 = m2 = m (mass of one car) = 80 t; R (distance between cars) = 100 m.

Constants: G (gravitational constant) = 6.674 * 10 ^ -11 m ^ 3 / (kg * s ^ 2).

SI system: m = 80 t = 80 * 10 ^ 3 kg.

The force with which the cars are attracted to each other is calculated by the formula: F = G * m1 * m2 / R ^ 2 = G * m ^ 2 / R ^ 2.

Let’s do the calculation:

F = 6.674 * 10 ^ -11 * (80 * 10 ^ 3) ^ 2/100 ^ 2 ≈ 42.7 * 10 ^ -6 H = 42.7 μN.

Answer: Two cars are attracted with a force of 42.7 μN.