- #1
Smartornot
- 4
- 0
Force in water storage, please help!
[PLAIN]http://img13.imageshack.us/i/storageo.jpg/Hey!
I am dealing with a an old construction/physics assignment and really need some help.
The assignment is as follows:
To make sure that a waterstorage is not flooded, one of the walls have a window with the measures (metres): width x hight = b x h = 3 x 3
In the lower part of the window, there is a lock built in. This lock is unlocked and releases the water when the waterlevel reached height d.
The assignment is to calculate the force RA (kN), that arises when the water level reaches the height d. This force is the force that "tells" the lock to release and to let water push out of the storage. Water has the "weight" 10 kN/m^3.
My start of the solution: The force that pushes from the water is q= Yv*x. According to Newton's third law, RB and RA are the same size as q. If b*h= 9, this would mean that q is = 9 * 10 = 90 kN.
But I have a feeling this is wrong because I need to implement the x somehow. Can someone please help? I really need help with this and would be grateful for any reply!
Please see the attached picture below to get a better idea.
http://img13.imageshack.us/i/storageo.jpg/
[PLAIN]http://img13.imageshack.us/i/storageo.jpg/Hey!
I am dealing with a an old construction/physics assignment and really need some help.
The assignment is as follows:
To make sure that a waterstorage is not flooded, one of the walls have a window with the measures (metres): width x hight = b x h = 3 x 3
In the lower part of the window, there is a lock built in. This lock is unlocked and releases the water when the waterlevel reached height d.
The assignment is to calculate the force RA (kN), that arises when the water level reaches the height d. This force is the force that "tells" the lock to release and to let water push out of the storage. Water has the "weight" 10 kN/m^3.
My start of the solution: The force that pushes from the water is q= Yv*x. According to Newton's third law, RB and RA are the same size as q. If b*h= 9, this would mean that q is = 9 * 10 = 90 kN.
But I have a feeling this is wrong because I need to implement the x somehow. Can someone please help? I really need help with this and would be grateful for any reply!
Please see the attached picture below to get a better idea.
http://img13.imageshack.us/i/storageo.jpg/
Last edited by a moderator: