Physics - Rotation Question with Solution | TestHub
PhysicsRotationMiscellaneousMedium3 minQB
PhysicsMediuminteger
The moment of inertia of the plate in fig(a) about the about axis shown is I. The moment of inertia of the hexagonal plate of same material shown in figure(b) about the axis given in figure(b) is I,find value of .
Answer:
1
Solution:
Both plates have the same areal density.
Using the centroidal-axis formula for the triangle and decomposing the hexagon into equilateral triangles gives I_hex=10I.
Therefore 10αI=10I, so α=1.
Stream:JEESubject:PhysicsTopic:RotationSubtopic:Miscellaneous
⏱ 3mℹ️ Source: QB
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