The gate AB below (S.G. = 8.0) is 0.1 m thick, 2 m long (from A to B), and 10 m wide into the page. It is hinged at point A and has a stopper at point B that can hold back water up to a depth of 4m before it fails. What is the force provided by this stopper just before it fails, when water depth is 4m? Assume that when water depth is 4m, the centroid of the gate is located 3.1 m below the water surface. Account for the weight of the gate (acting through the gate's centroid), but assume the hinge is frictionless and negligibly small. Assume water density is constant and static conditions apply. hinge (at A) centroid of gate Fstopper (perpendicular to gate, at B) WALL 3.1 m A 4 m 60° B GROUND H₂O

Structural Analysis
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Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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The gate AB below (S.G. = 8.0) is 0.1 m thick, 2 m long (from A to B), and 10 m wide into the
page. It is hinged at point A and has a stopper at point B that can hold back water up to a depth
of 4m before it fails. What is the force provided by this stopper just before it fails, when water
depth is 4m? Assume that when water depth is 4m, the centroid of the gate is located 3.1 m
below the water surface. Account for the weight of the gate (acting through the gate's centroid),
but assume the hinge is frictionless and negligibly small. Assume water density is constant and
static conditions apply.
hinge
(at A)
centroid of gate
Fstopper
(perpendicular
to gate, at B)
WALL
3.1 m
A
4 m
60°
B
GROUND
H₂O
Transcribed Image Text:The gate AB below (S.G. = 8.0) is 0.1 m thick, 2 m long (from A to B), and 10 m wide into the page. It is hinged at point A and has a stopper at point B that can hold back water up to a depth of 4m before it fails. What is the force provided by this stopper just before it fails, when water depth is 4m? Assume that when water depth is 4m, the centroid of the gate is located 3.1 m below the water surface. Account for the weight of the gate (acting through the gate's centroid), but assume the hinge is frictionless and negligibly small. Assume water density is constant and static conditions apply. hinge (at A) centroid of gate Fstopper (perpendicular to gate, at B) WALL 3.1 m A 4 m 60° B GROUND H₂O
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