Categories > Mechanical Properties of Fluids > Surface Tension > A thin metal disc of radius $r$ floats on water surface and bends the surface downwards along the perimeter making an angle $\theta$ with vertical edge of the disc. If the disc displaces a weight of water $W$ and surface tension of water is $T$, then the weight of metal disc is

Mechanical Properties of Fluids

Question: A thin metal disc of radius $r$ floats on water surface and bends the surface downwards along the perimeter making an angle $\theta$ with vertical edge of the disc. If the disc displaces a weight of water $W$ and surface tension of water is $T$, then the weight of metal disc is


1) $2\pi rT+W$
2) $2\pi rT\cos \theta -W$
3) $\text{2}\pi \text{rTcos}\theta +W$
4) $W-2\pi rT\cos \theta $
Solution: Explanation: No Explanation
Surface Tension

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