A canal barge is towed along a straight horizontal canal by a cable, as shown in the diagram below.
The cable is held at an angle of 60∘ 60^\circ\,60∘ to the direction of motion of the barge.
The tension, TTT, in the cable does 18 000 J18\,000\text{ J}18000 J of useful work as the barge is towed a distance of 120 m along the canal.
Calculate the magnitude of the tension force, TTT, in the cable.