Question

The time period of a freely suspended magnet is T .If it is broken along length into two equal parts and one part is suspended in the same way .Then it's time period will be?
It's ans is = T { Explain how }

Answer 1

Answer:

Explanation:

The formula for Time period is given by:-

T=2π$\sqrt{\frac{I}{MB} }$

If the magnet is broken along length, then M remains same , because the magnetic moment depends only on the length of the magnet

Also, I does not change because I is given by I=$\frac{mL^{2} }{12}$ where m is mass and l is length of magnet

Hence T'=T provided it is kept in the same magnetic field (or in the same place on Earth)

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