Practise calculating moments from force and perpendicular distance, determining clockwise or anticlockwise turning, and using the correct N m unit.
A radio transmitter is a very tall, thin cylinder. It is prevented from falling over by wires which have one end fixed to the transmitter and the other end fixed in the ground. The ends of the wires in the ground are a long distance from the transmitter.
Fig. 4.1 shows the transmitter and two of the wires.
Fig. 4.1
Wire W is under tension and it exerts a force T on the transmitter.
The force T produces a moment on the transmitter about its base.
Describe how the moment produced by T is calculated and indicate on Fig. 4.1 what is meant by any other terms in the description.