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In Meld`s exp...

Question

In Meld`s experiment, three loops are formed by putting a weight of $8 g$ in a massless pan. The weight required to form two loops is.

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Solution

In Melde’s experiment, $\frac{T}{l^{2}} = c o n s t a n t,$
l= length of loop
Hence, $\frac{3}{l^{2}}$ =constant and $\frac{T}{l^{2}} = \frac{T}{{2 l}^{2}}$ =constant or $\frac{3}{12} = \frac{T}{{2 l}^{2}} = \frac{T}{{4 l}^{2}}$ or $T = 24 g m w t .$

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