Equilibrium of forces on a kite

Steps:

• Identify forces: weight W acts downward due to gravity.
• Tension T acts along the string, upward and toward the holder at an angle.
• Wind force F provides lift, acting upward and opposite to the kite's tendency to drift.
• For equilibrium, vector sum of T, W, and F must be zero, forming a closed triangle.

Why A is correct:

• Newton's first law requires resultant force zero; diagram A shows vectors forming a closed triangle, balancing all three forces.

Why the others are wrong:

• B: Vectors do not close, implying unbalanced net force.
• C: Incorrect angles; wind force misaligned with typical lift direction.
• D: Omits proper opposition between tension and weight components.

Final answer: A