Question

what is hydraulic stress write its dimensional formula​

Answer 1

The dimensional formula of stress is 7[ML^-1T^-2]. This might seem as the dimensional formula of pressure but the basic difference between Stress and Pressure is that stress is internal force per unit area whereas pressure is external force per unit area.

Answer 2

Answer:

hydraulic stress is a measure of internal force per unit area on liquids . it is the restoring force per unit area when force is applied by a fluid on the body . ... hydraulic stress is the measure of the internal force per unit area acting on the liquids .

the dimensional formula of stress is 7[ML^-1T^-2] .