A wire ring of 9/11 cm. radius and negligible weight rests flat on the surface of a liquid and then raised. The pull required is 3 gm wt. before the flim breaks. If g=10m//s^(2) calculate the surface tension of the liquid.

A wire ring of 9/11 cm. radius and negligible weight rests flat on the

1.	A wire ring of 9/11 cm. radius and negligible weight rests flat on the surface of a liquid and then raised. The pull required is 3 gm wt. before the flim breaks. If g=10m//s^(2) calculate the surface tension of the liquid.
Answer» ANSWER :291.7 dyne/cm