Question

13) The total normal force experienced by a surface is​

Answer 1

Answer:

The normal force acting through a surface of contact is the sum of forces acting on subparts of the surface. The magnitude of normal force per unit area is termed pressure. If we denote the pressure at a point on the surface of contact by, then the total normal force can be given by integrating this pressure over the entire area of contact

Explanation:

Answer 2

In mechanics, the normal force {\displaystyle F_{n}\ } F_n\ is the component of a contact force that is perpendicular to the surface that an object contacts, as in Figure 1.[1] In this instance normal is used in the geometric sense and means perpendicular, as opposed to the common language use of normal meaning common or expected. A person standing still on a platform is acted upon by gravity, which would pull him down unless there were a countervailing force from the resistance of the platform's molecules, a force which is named the "normal force". The normal force is one type of ground reaction force. If the person stands on a slope and does not slide down it, the total ground reaction force can be divided into two components: a normal force perpendicular to the ground and a frictional force parallel to the ground. In another common situation, if an object hits a surface with some speed, and the surface can withstand it, the normal force provides for a rapid deceleration, which will depend on the flexibility of the surface and the object.