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there are two types of flow in a moving fluid: laminar, and turbulent.
laminar flow is when
the fluid above and below the object do not cross into each other. how profound. on the
opposite end of the scale, turbulent flow is when the streamlines are no longer continuous.
wow. WOW. Isn't that amazing, that streamlines can just... do that. wow. and that is why
i love science. You might be asking why this relates to the topic of stokes law. Well lets...
take a look... and here you can see stokes law. stokes law
refers to when a sphere moves slowly through a fluid, and the movement of the fluid is
laminar. the molecules of the fluid adhere to the surface of the sphere and move along
with it, creating a viscous drag between the other layers of the fluid. This symbol here
represents pi. mmmmmmm pie
no jordan not that kind of pie!!!!11!!!11!!!!1! pie is an infinite number, and we dont need
to worry about it, but we just piyt the symbol into a calculator. thats amazing. and this
fancy littlen thing represents the coefficient of viscosity. upthrust is the upward force
that a liquid or a gas exerts on the body floating in it. this allows for buoyancy.
we explore this because we are curious, not because we need to develop grand views of
reality, or better widgets. when we talk about motion and forces, we come across this word.
drag. In fluid dynamics, drag refers to forces which act on a solid object in the direction
of the relative fluid flow velocity. when we talk about materials, we use the word viscous
drag. viscous drag is drag that occurs when an object moves through a liquid or when a
liquid flows past a stationary object. it is a resistive force. and thats... why science
is amazing.