InterviewSolution
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InterviewSolution
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Two circular discs A and B have equal masses and uniform thickness but have densities `rho_(1)` and `rho_(2)` such that `rho_(1)gt rho_(2)` . Their moments of inertia isA. `I_(1)gt I_(2)`B. `I_(1)gt gt I_(2)`C. `I_(1)lt I_(2)`D. `I_(1)=I_(2)` |
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Answer» Correct Answer - C `I_(1)=(MR_(1)^(2))/(2)` and `I_(2)=(MR_(2)^(2))/(2)` `(I_(1))/(I_(2))=(R_(1)^(2))/(R_(2)^(2))` and `rho_(1)=(m)/(A_(1))` and `rho_(2)=(m)/(A_(2))` `(rho_(1))/(rho_(2))=(A_(2))/(A_(1))` `= (R_(1)^(2))/(R_(1)^(2))` |
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