Physics - Rotation Question with Solution | TestHub

PhysicsRotationMiscellaneousMedium2 minQB
PhysicsMediumsingle choice

A uniform square plate S of side c and a uniform rectangular plate R of sides a and b, with a>b, have equal areas and equal masses. Decide which statements are correct:

 

 

 

rectangle R and square S with axes

Options:

Answer:
C
Solution:

Since ab=c² and a>b, we have b<c<a.

Therefore IxR/IxS=b²/c²<1 and IyR/IyS=a²/c²>1.

Also (a²+b²)/(2c²)>1 by AM-GM.

Hence statements a, b and c are correct.

Stream:JEESubject:PhysicsTopic:RotationSubtopic:Miscellaneous
2mℹ️ Source: QB

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