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 gentle inextensible string of protraction a is strong to vertex A of a across layer ABCD of efficacy W and the other

end is strong to a object on a ease perpendicular glacis. Here AB =a & BC=3a , 3 . The layer is in equilibrium in a plane

perpendicular to the glacis and vertex B is in adjunction after a while glacis. Show that the string makes an determination 4/pie after a while the glacis. Find the strain in the string and the reaction exerted on vertex B by the glacis.

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