A bar of length l, breadth b and depth d is supported at its ends and is loaded at the centre by a load W. If Y is the Young's modulus of the material of the bar, then the depression delta at the centre is :

A bar of length l, breadth b and depth d is supported at its ends and

1.	A bar of length l, breadth b and depth d is supported at its ends and is loaded at the centre by a load W. If Y is the Young's modulus of the material of the bar, then the depression delta at the centre is :
Answer» `(WL^(3))/(4bd^(3)Y)` `(Wb^(3))/(4dl^(3)Y)` `(Wd^(3))/(4lb^(3)Y)` `(Wl^(3))/(bd^(3)Y)` Solution :A bar of LENGTH l, breadth b, and depth d when LOADED at the centre by a LOAD W sags by an amount given by `delta=(Wl^(3))/(4bd^(3)Y)` Thus correct choice is (a).

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A bar of length l, breadth b and depth d is supported at its ends and is loaded at the centre by a load W. If Y is the Young's modulus of the material of the bar, then the depression delta at the centre is :

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