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Two rings of radius R and nR, made up of same material (linear mass density) have the ratio of moment of inertia about an axis passing through centre as 1 : 8. The value of n is
  • a)
    2
  • b)
    1/4
  • c)
    4
  • d)
    1/2
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Two rings of radius R and nR, made up of same material (linear mass de...
For ring:
MOI about diametric axis:
MOI about polar axis:
Linear mass density:
 
m=λ×2πR
n = 2
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Two rings of radius R and nR, made up of same material (linear mass density) have the ratio of moment of inertia about an axis passing through centre as 1 : 8. The value of n isa)2b)1/4c)4d)1/2Correct answer is option 'A'. Can you explain this answer?
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