A sign hangs off the side of a building with a beam and a cable. The beam is 3m long and the cable makes an angle of 30 degrees with the beam. If the mass of the sign is 10 kg, what is the tension in the cable? You can assume that the beam and the cable are so light as to be massless. (Hint: find the torques around the point where the beam attaches to the building)

A sign hangs off the side of a building with a beam and a cable. The beam is 3m long and the cable makes an angle of 30 degrees with the beam. If the mass of the sign is 10 kg, what is the tension in the cable? You can assume that the beam and the cable are so light as to be massless. (Hint: find the torques around the point where the beam attaches to the building)