With what force are two wagons with a mass of 100 tons attracted if the distance between them is 2 km.
| June 2, 2021 | education
Basic formula:
F = G * m1 * m2 / r ^ 2,
where F is the force of gravity, m1 and m2 are the masses of interacting bodies, r is the distance between the bodies, G is the gravitational constant, equal to 6.67 * 10 ^ (- 11) N * m ^ 2 / kg ^ 2.
m1 = m2 = 100 t = 100,000 kg = 10 ^ 5 kg,
r = 2 km = 2000 m = 2 * 10 ^ 3 m.
In this way
F = (6.67 * 10 ^ (- 11) * 10 ^ 5 * 10 ^ 5) / ((2 * 10 ^ 3) ^ 2) = 1.7 * 10 ^ (- 7) N.
Answer: the cars are attracted with a force F = 1.7 * 10 ^ (- 7) N.
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