The diagram shows a light fitting held in place by two cables.
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(a) Calculate the vertical component of the 450 N force. [2]
(b) Write down the weight of the light fitting. [1]
(c) Explain why a vector diagram that represents the forces on the light fitting is a closed triangle. [2]
(d) Draw the vector diagram and use it to find the value of the force S. [2]
