a grid pendulum is made up of 5 iron rods and 4 brass rods if the length of each brass rod is 50 cm the length of iron rod is
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a grid pendulum is made up of 5 iron rods and 4 brass rods if the length of each brass rod is 50 cm the length of iron rod is
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Explanation:
Total change in lengths of the brass and iron rods must be same with equal change in temperature.
Hence 3l
iron
α
iron
Δθ=4l
brass
α
brass
Δθ
⟹l
iron
=2l
brass
=100cm