JEE Main 2026 — Laws of Motion Question with Solution
JEE Main 2026 (24 January Shift 2)
Question
A flexible chain of mass hangs between two fixed points at the same level. The inclination of the chain with the horizontal at the two points of support is . Considering the equilibrium of each half of the chain, the tension of the chain at the lowest point is .
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Show full solutionCorrect option: A
Correct answer
A
Step-by-step explanation
A chain of mass hangs between two fixed points at the same level with inclination at support points.
Consider equilibrium of one half of the chain (mass ):
Horizontal equilibrium:
Vertical equilibrium:
From vertical equation: , giving
Substituting into horizontal equation:
Consider equilibrium of one half of the chain (mass ):
Horizontal equilibrium:
Vertical equilibrium:
From vertical equation: , giving
Substituting into horizontal equation:
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This is a previous-year question from JEE Main 2026, covering the Laws of Motion chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.