A thin uniform metallic rod of mass {m} length L, Young modulus of elasticity Y and cross-sectional area A is rotated by angular velocity \omega about extreme end AA'. Consider a section on the rod at midpoint of rod. What will be the normal stress in {N} \/ {m}^{2} on the shaded region? (Take the value of {M \omega^{2} L^{2} \cos ^{2} \theta}/{A}=10 N \/ m^{2})

JEE Advanced 2020 Full Test 4 Paper 1

Question : 15 of 54

Marks: +1, -0

A thin uniform metallic rod of mass m length L, Young modulus of elasticity Y and cross-sectional area A is rotated by angular velocity ω about extreme end AA'. Consider a section on the rod at midpoint of rod. What will be the normal stress in N∕m2 on the shaded region?
(Take the value of ‌

Mω2L2cos2θ

=10N∕m2)

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