Solution:

• Pascal’s law is a principle in fluid mechanics that states that a stress change that occurs anywhere in an uncompresible liquid is transmitted throughout the liquid.

• Pascal’s principle: At any stage of a closed fluid, the change in pressure is transferred to all points in the liquid in no less.

• The pressure exerted on a liquid in a closed container is transferred equally and less equally to all parts of the container and acts at the right angle to the surrounding walls.