Physics - Rotation Question with Solution | TestHub
PhysicsRotationCalculation of M.I.Medium2 minPYQ_2023
PhysicsMediumsingle choice
Seven identical discs each of mass and radius are arranged in a hexagonal plane pattern so as to touch each neighbour disc as shown in the figure. The moment of inertia of the system of seven discs about an axis passing through the centre of central disc and normal to the plane of all discs is
Options:
Answer:
D
Solution:
M.I of a circular disc 
Using parallel axis theorem, M.I. about origin
where, . I of the central disc . I of the each disc about the given axis.
Stream:MHT_CETSubject:PhysicsTopic:RotationSubtopic:Calculation of M.I.
⏱ 2mℹ️ Source: PYQ_2023
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