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# Where is the Rotation Axis?

APPH12-7MHOL0

Shown in the image is a mass-less bar of length, $l$ $=$ $3$ $m$, with a mass hanging at each end.

If the bar is in static equilibrium, how far from the left end of the bar is the rotation axis?

A

$1.50$ $m$

B

$0.56$ $m$

C

$1.20$ $m$

D

$1.80$ $m$