A thin liquid film formed between a U-shaped wire and a light slider supports a weight of 1.5 x10–2N (see figure). The length of the slider is 30 cm and its weight negligible. The surface tension of the liquid film i
tanisha singh , 11 Years ago
Grade 11
2 Answers
Raghavendra Narayan
Last Activity: 8 Years ago
For a liquid film ,the force F is given by;
F = 2 x (T) X (L)
1.5 X 10-2=2 X T X (0.3)
T=2.5 X 10-2=0.025N/m.
The weight of the slider is negligable hence the surface tension ofliquid film is 0.025N/m
Rishi Sharma
Last Activity: 4 Years ago
Dear Student, Please find below the solution to your problem.
For a liquid film ,the force F is given by; F = 2 x (T) X (L) 1.5X10-2=2 X T X (0.3) T=2.5 X 10-2=0.025N/m. The weight of the slider is negligable hence the surface tension ofliquid film is 0.025N/m
Thanks and Regards
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