Question

In the figure, a thin horizontal bar AB of negligible weight and length L = 3.8 m is hinged to a vertical wall at A and supported at B by a thin wire BC that makes an angle θ = 28° with the horizontal. A block of weight W = 190 N can be moved anywhere along the bar; its position is defined by the distance x = 3.02 m from the wall to its center of mass. Find (a) the tension in the wire, and the (b) horizontal and (c) vertical components of the force on the bar from the hinge at A.

Answer 1

I'm kinda confused because the problem doesn't give the weight of the beam or Idk if it is needed so pls help

Answer 2

a thin horizontal bar AB of `negligible weight `

Answer 3

you may assume the weight of beam is 0

Answer 4

Observe that the system is in equilibrium. So the net torque about any point must be 0