Screenshot_20190305-001643.png A circular plate of radius 4cm and weight w is made to rest on one surface of water. if a minimum force is needed to clear the plate from water surface. Then find F. Given Sw=0.072 N/m

Answers (1)
S safeer


For a circular plate the force required is F = 2 π R  * Sw 
   as the interface between the water, plate and air is a circle of radius R