How do liquids and gases exert force?
Answers
Explanation:
their molecules have kinetic energy and they impart force and work is done on walls of container and they loose some of their kinetic energy.
Gases
The molecules are continually colliding with each other and with the walls of the container. When a molecule collides with the wall, they exert small force on the wall The pressure exerted by the gas is due to the sum of all these collision forces.The more particles that hit the walls, the higher the pressure.
If a gas is heated up, its particles move around more quickly. They hit the walls of their container harder and more often. This increases the pressure. Sometimes the pressure gets so great that the container bursts.
Liquids
Fluids are made of a large number of very small particles. These particles are in constant, rapid motion. They bump
into one another. They bump into the walls of any container that holds
them. They bump into objects in the fluid.
As the particles of a fluid bump into an object in the fluid, they
apply forces to the object. The forces, acting over the object’s surface,
exert pressure on the object. When the pressure in a fluid increases, the
particles bump together more frequently. This increases the pressure
on objects in the fluid.
The pressure a fluid exerts on an object in the fluid is applied in
all directions. That is because the particles that make up the fluid can
move in any direction. These particles exert forces as they bump into
objects in the fluid. The picture shows how water exerts pressure on a
diver who is underwater. Notice that the arrows point in different
directions. That is because the water is pressing all around the diver,
not just from above.
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