3 Hydrostatic force on a surface Flashcards
1
Q
Yc definition
A
Distance from surface of water to CENTROID along the plane
2
Q
Delta y definition
A
Distance between centroid and the point where pressure P acts
3
Q
Ic definition
A
MOI with respect to centroidf
4
Q
I0 definition
A
MOI with respect to origin o
5
Q
Delta y formula
A
Ixc/(AYc)
6
Q
Ic of rectagle/square
A
Ic = bh^3/12
where the side that is perpendicular to axis is cubed
(ie, the side parallel to axis is not cubed)
7
Q
Ic circle formula
A
same value along x or y axis as it is symmetrical, (pi R^4)/4
8
Q
Centroid of a quadrant/ semicircle
A
Y bar= 4R/3pi
9
Q
Centroid of a triangle
A
x bar= top + bottom /2
y bar= 1/3 h
10
Q
Ic of triangle
A
ba^3/36
AGAIN the cubed side is perpendicular to axis
11
Q
Hydrostatic F on curved sruface
A
Fnet must be resolved into Fx and Fy
12
Q
A
