"Where would the scale tip? On the left is a steel ball, on the right a ping-pong ball," Reddit user Veiy wrote, posing the conundrum. "I think the scale would raise to the right since the [buoyancy] ...

Mm-hm. So to launch a rocket into space,you would need a huge upward force to overcomethe downward force of Earth's gravity, is that right?Yes, spot-on. Yes! Getting high enough to escape Earth's ...

When the engines are fired, an unbalanced force accelerates the rocket into the sky. The upward force of the thrust from the rocket engines is greater than the downward weight of the rocket.