Question

In a laboratory on earth, all the air is pumped from a large tube. a feather and a steel ball are simultaneously released from rest inside the tube. what happens next?

Answer 1

By pumping out all air from a large tube, we basically formed an environment that is vacuum in nature inside the tube. So, air resistance is no longer a factor in the descent of the feather and the steel ball. These objects will fall at the same time to the end of the tube.