External forces are really important when it comes to how fluids move and how they transfer momentum. Let’s break it down:
What Is Momentum?
Momentum is a way to measure how much motion an object has.
It's calculated by multiplying mass (how much stuff is in the object) by velocity (how fast it's moving).
The formula looks like this:
Momentum (p) = Mass (m) x Velocity (v)
How External Forces Matter:
External forces include things like gravity or pressure.
When these forces act on a fluid, they can change how fast it moves.
This change in speed also changes the fluid's momentum.
Conservation of Momentum:
According to a rule by Newton, if something changes its momentum, it’s because an outside force is acting on it.
You can think of it like this: when you push a ball, it speeds up because of your push.
The formula shows this relationship:
Force (F) = Change in Momentum (dp) / Change in Time (dt)
In short, external forces are what make fluids flow and help spread around their momentum. Understanding this is really important for figuring out how fluids behave.
External forces are really important when it comes to how fluids move and how they transfer momentum. Let’s break it down:
What Is Momentum?
Momentum is a way to measure how much motion an object has.
It's calculated by multiplying mass (how much stuff is in the object) by velocity (how fast it's moving).
The formula looks like this:
Momentum (p) = Mass (m) x Velocity (v)
How External Forces Matter:
External forces include things like gravity or pressure.
When these forces act on a fluid, they can change how fast it moves.
This change in speed also changes the fluid's momentum.
Conservation of Momentum:
According to a rule by Newton, if something changes its momentum, it’s because an outside force is acting on it.
You can think of it like this: when you push a ball, it speeds up because of your push.
The formula shows this relationship:
Force (F) = Change in Momentum (dp) / Change in Time (dt)
In short, external forces are what make fluids flow and help spread around their momentum. Understanding this is really important for figuring out how fluids behave.