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Two circular discs A and B have equal masses and uniform thickness but have densities ρ1 and ρ2 such that ρ12. their moment of inertia is
Asked by tusharsaumyaab | 25 Apr, 2019, 01:12: PM
answered-by-expert Expert Answer
disc-A and disc-B has same mass. Density of disc-A is ρ1 and density of disc-B is ρ2 .
 
Since it is given that ρ1> ρ2 , then volume of disc-B is greater than volume of disc-A.
But both disc has same thickness. Hence cross section area of disc-B is more or radius of disc-B is more.
 
For same mass of two circular discs, moment of inertia is greater for the disc that has greater radius.
 
Hence disc-B has greater moment of inertia compare to disc-A
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