on fluid statics?
April 24th, 2010
mikeo853 asked:
There are two dams of equal area. One dam holds back a very large lake, the other holds back a very narrow river. Which dam has to be built stronger?
Article by SMANSA
There are two dams of equal area. One dam holds back a very large lake, the other holds back a very narrow river. Which dam has to be built stronger?
Article by SMANSA
Possibly Related Posts:
- Twtter new revolution
- All Your Term Paper Solution
- No More Staying Up at Night Doing Research Paper
- How hard would it be to take fluid mechanics with out taking statics or dynamics ?
- I need the result of this Fluid Statics question?
Not found yet.
Posted in
The dam which holds the narrow river has to built stronger. This is because the lake water is somewhat not in motion and thus there arent currents rising up. Thus the forces act almost constant .
Why on earth would u need a dam to hold a narrow river. As soon as you make the dam , the water will pile up upstream and be a lake, which grows bigger over the years till it reaches the overflow level.
So u need the same strength at the end of it, isn’t it ?
On the other hand , if you are talking about a dam only to deflect a river, they need to be strong enough to take the impact load of the water. How strong? that would depend entirely on how strong the current is and what’s the water depth.
force=pressure*area
head=pressure/specific weight [hydrostatic law]
so, its depends upon the head available as the area in both the cases is same.
*Horizontal water forces acting on the gate and bouyant forces acting on the gate are depends upon the area , head and water displaced.
Since the area is same , the dam holding a very a very narrow river is to be made stronger.