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A rod of length 5 L is bent right angle keeping one side length as 2 L. The position of the centre of mass of the system: (Consider L = 10 cm)

1. j ˆ 7 i ˆ 3 +
2. j ˆ 9 i ˆ 4 +
3. j ˆ 3 i ˆ 2 +
4. j ˆ 8 i ˆ 5 +

Correct answer: j ˆ 9 i ˆ 4 +

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