1.

One end of a uniform bar of weight W_(1) is clamped to the ceiling and a weight W_(2) is suspended to the other end. If the area of cross-section is A, what is the stress at the mid-point of the rod ?

Answer»

`(W_(1)+W_(2))/A`
`(W_(1)-W_(2))/A`
`((W_(1))/2+W_(2))/A`
`((W_(2))/2+W_(1))/A`

Solution :Stress=`("WEIGHT" W_(2) + "Half the WT. of rod")/("area")`
`=(W_(2)+(W_(1))/2)/A`
Correct CHOICE is (c).


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