Question

A nonuniform beam 4.44 m long and weighing 1.10 kN makes an angle of 25 ? below the horizontal. It is held in position by a frictionless pivot at its upper-right end and by a cable a distance of 3.02 m farther down the beam and perpendicular to it (see Figure 11.31 in the textbook). The center of gravity of the beam is a distance of 2.04 m down the beam from the pivot. Lighting equipment exerts a downward force of 5.03 kN on the lower-left end of the beam.

Q1: Find the tension T in the cable.

Q2: Find the vertical component of the force exerted on the beam by the pivot.

-Assume that the positive x and y axes are directed to the right and upward respectively.

Q3: Find the horizontal component of the force exerted on the beam by the pivot.

-Assume that the positive x and y axes are directed to the right and upward respectively.

Answer 1