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A ring is cut from a platinum tube having 10cm internal and 11cm external diameter. It is supported horizontally from a pan of balance, so that it comes in contact with water in a glass vessel. What is the surface tension of water if an extra, 4.752gram wieght is required to pull it away from water ? (g=10 m/s -2 )

A ring is cut from a platinum tube having 10cm internal and 11cm external diameter. It is supported horizontally from a pan of balance, so that it comes in contact with water in a glass vessel. What is the surface tension of water if an extra, 4.752gram wieght is required to pull it away from water ? (g=10 m/s-2)

Grade:11

1 Answers

Sudip Ghosh
18 Points
12 years ago

 


2T=47.52/3.14x21

=> T=0.3603

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