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if rho is the density of the meterial of...

if `rho` is the density of the meterial of a wire and `sigma` is the breaking stress. The greatest length of the wire that can hang freely without breaking is

A

`sigma//rho g`

B

`sigma//2rhog`

C

`2sigma//rhog`

D

`rho//2sigmag`

Text Solution

Verified by Experts

Stress = weight/area
`=Alrhog//A=lrho g rArr sigma=lrho g`
`therefore l=sigma//rhog`
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