Civil engineers, dressmakers, dentists and fishermen are just some of the people for whom a knowledge of the strength and...

Physics Narrative 11-14

Floating and sinking are often the subject of study in science lessons. An object that is afloat is an object in equilibrium...

Physics Narrative 5-11 11-14

This is an account of the origins of the buoyancy force.

Physics Narrative 11-14

To appreciate the idea of density just imagine you can look deep inside a material. If the particles are packed closely...

Physics Narrative 11-14

Back to boat: the larger the hole it made in the water, the greater the support force–the buoyancy force.

Physics Narrative 11-14

When two surfaces are in contact there is a force acting on each surface that acts in a direction to stop them moving past one...

Physics Narrative 5-11 11-14

When objects move through a fluid (a liquid or a gas) their progress is opposed by a force which acts on the object and in the...

Physics Narrative 11-14

There are three kinds of contact forces that can support an object.

Physics Narrative 11-14

When was the last time you went for a swim? It is a common experience that when you duck your head under the surface of the...

Physics Narrative 11-14

So, if you hold your head under water you can detect the pressure of the surrounding water with your ears. (Your eardrum acts...

Physics Narrative 11-14

As stated earlier, the pressure in a liquid, such as water, increases with depth. You're also probably aware that this is true...

Physics Narrative 11-14

Have you seen the demonstration where the air is removed from an aluminium can? The open can sits on the bench totally at rest...

Physics Narrative 11-14