TS EAMCET · Physics · Mechanical Properties of Fluids
A straw of circular cross-section of radius \(R\) and negligible thickness is dipped vertically into a liquid of surface tension \(\mathrm{T}\). If the contact angle between the liquid and the straw material is \(53^{\circ}\). The force acting on the straw due to surface tension of the liquid is \(\left(\cos 53^{\circ}=\right.\) \(0.6)\)
- A \(\frac{12 \pi R T}{5}\)
- B \(\frac{6 \pi R T}{5}\)
- C \(\frac{4 \pi R T}{5}\)
- D \(\frac{3 \pi R T}{5}\)
Answer & Solution
Correct Answer
(A) \(\frac{12 \pi R T}{5}\)
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