Under the right condition,metal objects such as paper clips(see figure at the right hand side)can float on the water surface.Considering placing a short length l of a small diameter d of steel rod(specific weight=7500kg/m^3)on a surface of water .Assume the surface tension force act vertically upward

2. Under the right condition, metal objects such as paper clips (see figure at the right hand side) can float on the water surface. Considering placing a short length ( ) of a small diameter (d) of steel rod (specific weight =7500kg/m3 ) on a surface of water. Assume the surface tension force act vertically upward. a. Derive the force balance for the rod. (4 pt) b. What is the maximum diameter that the rod can have before it will sink? ( 6pt )