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M. Sai Suchandan Reddy Grade: 11
`        A thin metal disc of radius 'r' floats on water surface bends the surface downwards along the perimeter making an angle θ with vertical edge of the disc. If disc displaces a weight of water 'W' and surface tension of water is 'T', then the weight of metal disc is .......`
7 years ago

Saurabh Kumar
2411 Points
```										Weight of the metal disc = Total uipward force = Upthrust force + force due to surface tension = Weight of displaced water + Tcos(theeta)(2pie r) = W + 2(pie)r cos(cos theete T)Look into this and find the solution...........................
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2 years ago
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