Qualification > Sciences
Physics help!
Vin:
--- Quote from: ~Ahana~ on August 24, 2010, 09:01:38 am ---Anyone ???
--- End quote ---
Your Physics teacher. ::)
elemis:
--- Quote from: ~Vin~ on August 24, 2010, 09:02:23 am ---Your Physics teacher. ::)
--- End quote ---
She's on holiday ::)
@d!_†oX!©:
Can someone answer this please?
What is the meaning of viscous drag and upthrust?
For example: A submarine descends vertically at constant velocity. The three forces acting on the submarine
are viscous drag, upthrust and weight
nid404:
Viscous drag- Resistance derived from friction between the surface of a body and the fluid through which it is moving. The fluid particles adjacent to the body slow down, causing turbulent flow. The magnitude of the drag depends on a number of factors; it increases with the relative velocity of fluid flow, the surface area over which the flow occurs; the roughness of the body surface; and the viscosity of the fluid.
Upthrust-Upthrust is the force that pushes an object up and makes it seem to lose weight in a fluid.
@d!_†oX!©:
so then both are acting as resistive forces, right?
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