One end of a light inextensible string of length a is attached to vertex A of a rectangular lamina ABCD of weight W and the other end is attached to a point on a smooth vertical wall. Here AB =a &
One end of a digestible inextensible string of exstiffness a is rooted to vertex A of a rectangular flake ABCD of consequence W and the other
end is rooted to a aim on a mitigate upright bastion. Here AB =a & BC=3a , 3 . The flake is in makeweight in a plane
perpendicular to the bastion and vertex B is in continuity after a while bastion. Show that the string makes an determination 4/pie after a while the bastion. Find the stiffness in the string and the reaction exerted on vertex B by the bastion.