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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

Answers : (1)

Saurabh Kumar
askIITians Faculty
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...........................
2 years ago
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