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Homework Statement
The 140-lb uniform steel plate ABCD is welded to shaft EF and is maintained in the position shown by the couple M. Knowing that collars prevent the shaft from sliding in the bearings and that the shaft lies in the yz plane, plot the magnitude M of the couple as a function of θ for 0<= θ<=90.
http://img378.imageshack.us/my.php?image=figurefz3.jpg"
2. The attempt at a solution
From what I understand, this problem requires a system equivalent to zero.
Sum of F = 0
Sum of M (along EF) = 0
I am having problems setting/getting started on this problem.
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