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Point masses 1, 2, 3 "and" 4 "kg are lyi...

Point masses `1, 2, 3 "and" 4 "kg` are lying at the point `(0, 0, 0), (2, 0, 0), (0, 3, 0)` and `(–2, –2, 0)` respectively. The moment of inertia of this system about x-axis will be

A

`43 kg- m^(2)`

B

`34 kg- m^(2)`

C

`27 kg- m^(2)`

D

`72 kg- m^(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
`I= 3 xx (3)^(2) + 4(-2)^(2)`
`=27+ 16= 43 kg- m^(2)`
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