Archimedes principle

Archimedes' Principle

An object submerged in a fluid experiences a buoyant force equal to the weight of the fluid it displaces.

Buoyant Force

The upward force exerted by a fluid on an object placed in it, acting against gravity.

Displacement

The volume of fluid pushed aside when an object is placed in it.

Apparent Weight Loss in Water

The reduction in the effect of gravity on an object in water due to the buoyant force acting on it.

Key Idea of Buoyancy

The more fluid an object displaces, the greater the buoyant force.

Floating Object Condition

Buoyant force equals the object's weight when the object floats.

Sinking Object Condition

Buoyant force is less than the object's weight when the object sinks.

Displacement Example

When you step into a full bathtub, the water that spills out is an example of displacement.

Buoyant Force Example

A piece of wood floats in water because the buoyant force pushing up is greater than or equal to the wood's weight.

Weight in Water

Objects feel lighter in water because the buoyant force reduces the effect of gravity on them.

Key Idea of Buoyancy

The more fluid an object displaces, the greater the buoyant force.

Floating Object Condition

Buoyant force equals the object's weight when the object floats.

Sinking Object Condition

Buoyant force is less than the object's weight when the object sinks.

Displacement Example

When you step into a full bathtub, the water that spills out is an example of displacement.

Buoyant Force Example

A piece of wood floats in water because the buoyant force pushing up is greater than or equal to the wood's weight.

Weight in Water

Objects feel lighter in water because the buoyant force reduces the effect of gravity on them.