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प्रश्न
A rod has a radius of 100 mm and a length of 10 cm. A 100 N force compress along its length. Calculate the longitudinal stress developed in the rod.
विकल्प
2000 N/m2
2422 N/m2
3183 N/m2
5500 N/m2
MCQ
उत्तर
3183 N/m2
Explanation:
Given, radius of the rod, r = 100 mm = 100 × 10−3 m,
Length of the rod, l = 10 cm = 10 × 10−2 m
and force, Fn = 100 N
Longitudinal stress (developed in the rod)
= `"F"_"n"/"A"`
= `100/(pi(100 xx 10^-3)^2)`
= 3183 Nm−2
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