trojan15
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Homework Statement
Consider a uniform rod of mass 12 kg and length 1.0 m. At its end the rod is attached to a fixed, friction-free pivot. Initially the rod is balanced vertically above the pivot and begins to fall from rest. Determine
a) the angular acceleration of the rod as it passes through the horizontal.
Homework Equations
I started with torque = Ia = ML/2I got my equation down to
a= ML / [2(1/3 M L ^2)]
The Attempt at a Solution
however I am unsure what to do after this step, the answer key has it further reduced to 3g/2L, but I am confused where the g comes from?
Thanks