AIIMS 2019 Physics Free Body Diagrams MCQ Question
A block weighs W is held against a vertical wall by applying a horizontal force F. The minimum value of F needed to hold the block is [ ]
Less than W
Equal to W
Greater than W
Data is insufficient
Correct Answer
Detailed Explanation
Option C is correct because it accurately represents the forces acting on the block, including gravitational force (weight) acting downward and the normal force acting perpendicular to the surface. The equilibrium of forces is depicted correctly, indicating that the net force is zero when the block is at rest.
Options A, B, and D are incorrect as they either misrepresent the direction of the forces, fail to include all relevant forces, or suggest an unbalanced force scenario, which would not apply if the block is stationary. Understanding free body diagrams is crucial for analyzing forces and ensuring that all acting forces are accounted for in equilibrium situations.
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