[itex]IG = (1/12)ml^2[/itex]
The Attempt at a Solution
I take the moment about A, which gives me the following:
[itex]\alpha = 7.3575 rad/s^2[/itex]
But in the solutions they have: [itex]\alpha = 14.7 rad/s^2[/itex], which is 2 times more. They are taking the moment about G, using [itex]Fa = (1/2)(4kg)(9.81m/s^2)[/itex]. Why does it yield a different answer? The way I do it must be wrong, but I don't see why.
Also they have [itex](aG)y = 4.905m/s^2[/itex], but I though that [itex](aG)y = rG*\alpha[/itex], and [itex]rG = 1m[/itex] in this case, so [itex](aG)y[/itex] must be equal to [itex]\alpha[/itex]
What am I doing wrong? Thanks in advance for the help.
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