A wall is classified as a non-rigid body based on the definition that a rigid body does not change inter-molecular space under force application. However, in practical applications, the distinction between treating a wall as a rigid body versus a non-rigid body is often negligible. This makes the rigid body assumption a valuable simplification in engineering and physics contexts, despite the theoretical understanding that no body is truly rigid.
PREREQUISITESEngineers, physicists, and students studying mechanics or structural analysis who seek to understand the implications of rigid and non-rigid body assumptions in practical applications.