Question

Force is applied on the boxes kept on a smooth table as shown. In which of the following cases, the box will move?

• A. Case (A)
• B. Case (B)
• C. Both case (A) & case (B)
• D. Neither of the cases (A) and (B)

Answer 1

The correct option is B Case (B)

The boxes are kept on a smooth table, i.e., the friction is negligible. In the case (A), the applied force is balanced by the normal force, hence, there will be no motion in the case (A).
In case (B), since there is no force acting in the horizontal direction other than the applied force. This will lead to movement of the box along the direction of applied force.