Bells are made of metals but not of wood. Why?

Question

Bells are made of metals but not of wood. Why?

Accepted Answer

In fact, the intensity of sound produced by a vibrating body for a given external force is directly proportional to the density of the body. Since metal has a much higher density than the wood, the intensity produced by a metal bell is much than the intensity produced by a wood bell of the same dimension for than same force. As a result, louder sound can be produced by metal bells. In addition, the damping of sound waves in wood is much more than the damping in metal. Due to this, metal bells ring for a longer time than the wooden bells do. So, it is clear that the sound coming from a metal bell is louder and longer-lasting than that coming from a wooden bell. For these reasons, the bells are made up of metal but not of wood.

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