A steel wire is rigidly fixed along diam...

A steel wire is rigidly fixed along diameter of aluminium ring of radius R as shown. Linear expansion coefficient of steel is half of linear expansion coefficient for aluminium thent he thermal stress developed in steel wire is:

more than `Ralpha_(Al)trianglethetaY`

less than `Ralpha_(Al)trianglethetaY`

Equal to `Ralpha_(Al)trianglethetaY`

equal to `2Ralpha_(Al)trianglethetaY`

Text Solution

Verified by Experts

Stress `=2R[alpha_(al)-alpha_(st)]trianglethetaY` if aluminimum ring is alowed to expand freely
So stress `lt2R(alpha_(al))trianglethetaY`

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