13. When a rod is bent, the bending moment produced in it is: (A) IgR/Y (B) YIg/R (C) YIGR (D) YR/Ig
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Answer:
(A) Ig=R/Y
Explanation:
The moment of inertia is directly proportional to the Radius R and indirectly proportional to the Youngs modulus produced In the system.
Youngs modulus is nothing but elasticity.
Y=stress/Strain
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