Two vessels have the same base area but different shapes . The first vessel takes twice the volume of water that the second vessel requires to fill upto a particular common height . Is the force exerted by the two water on the base of the vessel the same in the two cases ? If so , why do the vessels filled with water to that same height give different readings on a weighing scale ?

Explanation

Pressure on the two equal base arese are identical . Shape of both vessels are different. The force is exerted by water on the sides of the vessels also which has a non - zero vertical component when sides of the vessel are not perfectly normal to the base . This net vertical component of force on the base is the same in the two cases .