Momentum and CollisionHard
Question
Water stands up to a height h behind the vertical wall of a dam. What is the net horizontal force pushing the dam down by the stream, if width of the dam is s ? (r = density of water ) : -
Options
A.2hσg
B.
C.
D.
Solution
Pressure on the wall = 
Net horizontal force
= P × area =
Net horizontal force
= P × area =
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