In the following question you should use the equilibrium of surface tension force and weight

- Surface tension forces can be strong - enough to allow a double-edge steel razor blade to "float" on water, but a single-edge blade will sink. Assume that the surface v tension forces act at an angle 0 relative to the water surface as shown in figure 6. (a) The mass of the double-edge blade is 0.64 X 103 kg, and the total length of its sides is 206 mm. Determine the value of 0 required to maintain equilibrium between the blade weight and the resultant surface tension force. (b) The mass of the single-edge blade is 2.61 X 1073 kg, and the total length of its sides is 154 mm Explain why this blade sinks. Support your answer with the necessary calculations. Use g = 9.81 m/s?, o =7.32 X 102 N/m. Surface tension Figure 6. Razor blade on water. Munson et al., 2002