volume_mute
Apparent Weight Underwater
publish date: 2026/05/18 21:36:2.805995 UTC
A heavy stone block weighs \(150\text{ lb}\) in the air. When it is completely submerged underwater, it displaces a volume of water that weighs \(50\text{ lb}\). What is the apparent weight of the stone block while it is underwater?
Answer = (1)
Correct Answer
(1) 100
Explanation
The apparent weight of an object underwater is equal to its actual dry weight minus the upward buoyant force exerted by the displaced fluid:
\[ \text{Apparent Weight} = 150\text{ lb} - 50\text{ lb} = 100\text{ lb} \]
Reference
Basic Physics: A Self-Teaching Guide