Se tiene una cuerda que pasa por una polea, en cada extremo de la cuerda cuelga una masa, que sucede si tienen la misma masa? Que sucede si una tiene mas masa que la otra?

The soviet union beat the us to the first successful launch, with the october 4, 1957, orbiting of sputnik 1, and later beat the us to have the first human in earth orbit, yuri gagarin, on april 12, 1961. the "race" peaked with the july 20, 1969, us landing of the first humans on the moon with apollo 11