Four masses m, 2 m, 3 m and 4 m are connected by a rod of negligible mass. The moment of inertia of the system about the axis AB is A. `52 ma^(2)`B. `9 ma^(2)`C. `50 ma^(2)`D. `20 ma^(2)`

Four masses m, 2 m, 3 m and 4 m are connected by a rod of negligible m

1.	Four masses m, 2 m, 3 m and 4 m are connected by a rod of negligible mass. The moment of inertia of the system about the axis AB is A. `52 ma^(2)`B. `9 ma^(2)`C. `50 ma^(2)`D. `20 ma^(2)`
Answer» Correct Answer - C `l=m_(1)r_(1)^(2)+m_(2)r_(2)^(2)+m_(3)r_(3)^(2)` `= 2m(a^(2))+3m(4a^(2))+4m(9a^(2))` `= 2ma^(2)+12ma^(2)+36ma^(2)` `50 ma^(2)`.

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Four masses m, 2 m, 3 m and 4 m are connected by a rod of negligible mass. The moment of inertia of the system about the axis AB is A. `52 ma^(2)`B. `9 ma^(2)`C. `50 ma^(2)`D. `20 ma^(2)`

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