Consider a rigid square plate of 1m side, its left edge being attached to a torsional spring of stiffness 10Nm/rad. There is an air flow coming from the right. The equilibrium position of the plate without flow is the horizontal position, as represented on the figure. At which velocity (m/s) does the static instability occur?
Here, we have given density of air as 1.225 , Torsional stifness= 10 Nm/rad