- #1

EchoTheCat

- 21

- 1

I've got a problem where a weight is being held to the side of a building using a beam and a cable. The weight is 336 pounds and the angle between the cable and the beam is 49 degrees. I need to calculate the tension of the cable and the force of the beam. I calculated the force of gravity as being 336*9.8 = 3292.8 lbf. If the tension in the cable is T, then sin 49 degrees = 3292.8 / T. I solved for T to be 4363.0027845 lbf. I calculated the force of the beam to be 3292.8/tan 49 degrees = 2862.4 lbf, but that's not the correct answer. I don't know what I've done wrong?