Let a wire be suspended from the ceiling (rig | vedclass

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Question

(C) Longitudinal stress is defined as the internal restoring force per unit cross-sectional area.In this case,the weight $W$ attached to the free end

Vedclass · Accepted Answer

$W / A$

Vedclass · Answer

(C) Longitudinal stress is defined as the internal restoring force per unit cross-sectional area.In this case,the weight $W$ attached to the free end of the wire exerts a downward force,which is balanced by an equal and opposite internal restoring force $F = W$ at any cross-section of the wire.Therefore,the longitudinal stress is given by:$	ext{Stress} = \frac{	ext{Force}}{	ext{Area}} = \frac{W}{A}$Thus,the correct option is $C$.

Let a wire be suspended from the ceiling (rigid support) and stretched by a weight $W$ attached at its free end. The longitudinal stress at any point of cross-sectional area $A$ of the wire is:

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