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# Torque: Professor Curie's Physics Sign

APPH12-L9KKIE

Professor Curie decided to place a physics sign above the door of her lab. Two wires of equal length attached to the ends of a heavy uniform rod hang vertically as shown in the picture below. The sign of negligible mass is attached to the horizontal rod which has a length of $r$.

Note that the picture may not be drawn to scale.

Which of the following statements regarding the forces in the wires ($T_1$ for the wire on the left and $T_2$ for the wire on the right), the weight of the rod ($W$) and the torque ($\large{\tau}$) on the rod are correct? Select TWO answers.

A

$T_1$ < $T_2$< $W$

B

$T_1$ = $T_2$ < $W$

C

$T_1$ + $T_2$ = $mg$

D

The torque due to $T_1$ is the same as the torque due to $T_2$.