2. The diagram to the right shows a heavy chain hanging from a ceiling (the top link is embedded in the ceiling, and the ceiling's not part of the system). From the bottom link of the chain hangs two ropes supporting a shelf. On the shelf are stacked three bricks. The bricks are heavy, but the shelf only bends slightly. By either marking on the diagram (or your own re-drawn diagram), or by making detailed explanations, identify: (a) where in this system the tension is greatest (b) where in this system the compression is greatest whether there is anywhere that is neither under tension nor compression[3 marks]

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