What will be the torque acting on the boundary if the boundary happens to be at the orientation of a cusp in the free energy?
What will be the torque acting on the boundary if the boundary happens to be at the orientation of a cusp in the free energy? Correct Answer Zero
If the boundary happens to be at the orientation of a cusp in the free energy, there will be no torque acting on the boundary since the energy is a minimum in that orientation. However, the boundary will be able to resist a pulling force Fy (in the vertical direction) of up to (dγ/dΘ) cusp without rotating.