A 20 m boom of weight 788 N and uniform density is pivoted on one end and supported by a cable attached at the three-quater point 15mfrom the pivot. The boomhangs at angle 58 above the horizontal, and the cable is per- pendicular to the boom. An object of weight 2159 N hangs on another cable attached to the boom's free end. Find the tension T in the supporting cable. Answer in units of N.