Question

A gas-filled balloon moves up. Is the upward force acting on it larger or smaller than the force of gravity?

Answer 1

The direction in which net force acting

1. The force acting upward is the buoyant force acting on the air inside the balloon, the downward force is the force of gravity acting on the balloon, and the upward force is greater than the force of gravity.
2. That is why the balloon is moving upwards.

Hence, the balloon filled with gas moves upward.