Recent content by pistolpete

is that equation for a specific type of supported beam? Supported at both ends, cantilever,ect?

Yes, if we are thinking about an actual beam we would apply that force to the top through the centroid, and as the beam deflected and twisted that point where we applied the load would not line up with the centroidal axis of the beam anymore. SO the book is basically just saying to arbitarilly...

I assume this question was due to my error on the figure references, so no this beam would just deflect downward. This is because there would be no net moment due to shear distribution (same on each side, but opposite so net moment is 0).

I aplogize for the confusion, I have that book but a different edition so I had the wring numbers for the figures I referenced, I went through and changed them to what they should be for the pages you posted.

are you thinking something like this?

When you apply a force on the beam through the centroid along an axis of symmetry for the cross section ( see fig 7.25a) then the beam just deflects downward. This is to be expected and seems reasonable. Now let's apply that same force the way it is shown in Fig 7.24a, that is through the...

If B is assumed to be long and therefore velocity 0, would there be a relative height in your Bernoulii equation that accounts for the weight of the fluid in B? Higher velocity in A would cause a the fluid in B to rise EDIT: Nevermind I see you are neglecting gravity, did not read that part!

Thanks for that, that makes thing a bit more clear! From that I see the area is selected depending on the application and in the case of the barge it implies that you would use wetted area (all submerged faces in th fluid) which would include the front and back faces (the two faces normal to the...

That value for Cd would work to find the total drag force (due to skin friction and pressure drag), but this question asks just for the friction drag and the drag coefficient that would need to be used (or assumed and then iterated with Renolds # until convergence) is CDf not Cd I believe.

That is correct

Think about the values of the pressure and velocity at the highest point the water rises? Would the pressure be the same as it was in the pipe? What would the velocity at that highest point be? Think about at ball, when you throw it up what is its velocity at the higest point it reaches?

Hello all, I have browsed this forum occasionally when I had questions and threads showed up on a search. I have been stumped by a problem, so I decided to create an account and see if anyone could help me out! 1. Homework Statement A coal barge 1000 ft long and 100 ft wide is submerged in a...