A uniform one metre long rod AB of weigh...

A uniform one metre long rod AB of weight 17 kg is suspended horizontally from fixed supports by two vertical strings attached to points C and D on the rod at distances of 12 cm and 16 cm from A and B respectively. The strings at C and D can support weights of 10 kg and 9 kg respectively without breaking. Then the position where a weight of 2 kg can be attached to the rod without breaking either of the strings is

10 cm from A

12 cm from A

13 cm from A

None of these

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