- #1
yaro99
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Homework Statement
A force P of magnitude 90 lb is applied to member ACE, which is supported by a frictionless pin at D and by the cable ABE. Since the cable passes over a small pulley at B, the tension may be assumed to be the same in portions AB and BE of the cable. For the case when a = 3 in., determine (a) the tension in the cable, (b) the reaction at D.
Homework Equations
ƩM=0
ƩF_x=0
ƩF_y=0
The Attempt at a Solution
I am stuck on part a). Here is my equilibrium equation:
ƩM_D=90*9 + T*3 - (5/13)*(9)*T - (12/13)*(7)*T = 0
Solving for T I get the wrong answer.