Question

Why does a mug full of water feel lighter inside water?

• A. Because of Buoyant force
• B. Because of Gravitational force
• C. Because of an increase in velocity
• D. Because of its kinetic energy

Answer 1

The correct option is A Because of Buoyant force

When a mug full of water is placed into water, it experiences an upward thrust. This upward thrust is known as the buoyant force. According to the Archimedes' principle, this force is equal to the weight of the fluid that the body displaces.

Hence, the net force experienced by the mug will be,

$F_{net}=F_{weight}-F_{upthrust}$

As a result, it appears lighter when placed inside water.