A flag pole consists of a 80 kg rod of length L = 2 m with a 10 kg point mass attached to the end. The pole is hinged at the bottom and is tied to a horizontal cable as shown.
1. What is the x-component of F (Fx) exerted by the wall on the flag pole at the hinged point A?
(The picture shows the flag pole hinged at a 30 degree angle to the horizontal and the 10kg point mass is not on the hinged side).
Net torque=0, Net force=0, τ=r x F=Iα.
The Attempt at a Solution
I've attempted to find the location of the center of mass so that I can know where the gravity acts on the rod. I have gotten many different answers but none of them have been correct. The correct answer is 850N and I don't know how to get there, other than Fnet=0N and τnet=0Nm. I also think torque due to the hinge is zero since it is at the hinge and therefore r x F is zero.