PHYSICS · Subjective · AP · Physics 1: Algebra-based · Force and Translational Dynamics · Force and Translational Dynamics
Problem
Two identical boxes, A and B, rest in contact on a horizontal, frictionless surface. A horizontal push to the right is applied only to box A. A student lists the forces acting on box B as:
• weight of B (downward)
• normal force from the surface (upward)
• normal force from box A (to the right)
• applied push force (to the right)
Identify every force in the list that should be removed or added so that the list is correct for box B, and justify each change in one sentence.