A uniform beam of length L and mass M has its lower end pivoted at P on the floor, making an angle θ with the floor. A horizontal cable is attached at its upper end B to a point A on a wall. A box of mass M is suspended from a rope that is attached to the beam one-fourth L from its upper end. What is the tension in the horizontal cable, in newtons, if the mass of the beam is 36 kg, the length of the beam is 13 m, and the angle is 28°?

A uniform beam of length L and mass M has its lower end pivoted at P on the floor, making an angle θ with the floor. A horizontal cable is attached at its upper end B to a point A on a wall. A box of mass M is suspended from a rope that is attached to the beam one-fourth L from its upper end. What is the tension in the horizontal cable, in newtons, if the mass of the beam is 36 kg, the length of the beam is 13 m, and the angle is 28°?