Question

what will happen if the material of a pendulum of a clock is made up of aluminium
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Answer 1

Answer:

Around 1900 low-thermal-expansion materials began to be used for pendulum rods in the highest precision clocks and other instruments, first invar, a nickel steel alloy, and later fused quartz, which made temperature compensation trivial.

Answer 2

Answer:

the pendulum might work slower

Explanation:

as aluminum is a light metal so it is not used instead of it iron is used so by using aluminum the pendulum might stop faster then other metals