कौन सा प्राथमिक गुण यह निर्धारित करता है कि कोई वस्तु किसी द्रव में डूबेगी या तैरेगी?

In a fluid, the buoyant force acting on a submerged or floating object always acts _________.

A ship floats on water because:

When an empty plastic bottle with an airtight stopper is pushed deeper into a bucket of water, the increasing upward force that resists the downward push is known as __________.