Reaction d'un support

This lecture covers the concept of reaction of a support when a body is placed on it, explaining how the atoms of the two solids interact and the normal reaction force RN directed from the support to the object. It also includes examples of a mass on a horizontal and inclined support, detailing the forces involved and the implications of the body remaining on the plane. The lecture further explores the use of the constraint of connection in various scenarios, providing mathematical expressions for the forces and constraints involved.