Homework Answers
a] Let tension be T,
since it is at equilibrium, net torque = 0
T* 3 - mg*L/2 cos 37 degree - Mg L cos 37 degree = 0
T*3 - 12*9.8*6/2*0.8 - 21*9.8*6*0.8 = 0
T = 423.4 N
b] Vertical force at A = Mg+mg = 21*9.8+12*9.8 = 323.4 N
Horizontal force = T = 423.4N
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