Shown in the figure is rigid and uniform one meter long \( \operatorname{rod} A B \) held in hor....

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\( \mathrm{P} \)
Shown in the figure is rigid and uniform one meter long \( \operatorname{rod} A B \) held in horizontal position by two strings tied to its ends and attached to the ceiling. The rod is of mass ' \( m \) ' and has another weight of mass \( 2 \mathrm{~m} \) hung at a distance of \( 75 \mathrm{~cm} \) from \( \mathrm{A} \). The tension in the string at \( A \) is:
(1) \( 0.5 \mathrm{mg} \)
(2) \( 0.75 \mathrm{mg} \)
(3) \( 2 \mathrm{mg} \)
(4) \( 1 \mathrm{mg} \)


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