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posted by  Jehuty on 7/21/2008 8:57:38 PM  |  status: Closed  

Finding Iy and Ky of shaded area help please

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posted by rooya on 7/22/2008 11:55:40 PM  |  status: Live
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the two points A and B where the curve and the straight line intersects satisfie the equation
hence equation 1and2
                 
                      
                  
                   
                     
                              x=-5 or 4
Area of strip dA=ydx=(y1-y2)dx
area of the shaded area =
                               
                                A=225/2 =112.5
Moment of inertia about y-axis
Iy==
Iy=
Iy=337.95
Ky=1.733
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