A frictionless circular wire of unit radius is fixed on the horizontal plane. Two point particles of unit mass start moving simultaneously from point A (θ = π/2) with identical uniform angular speeds

Question

A frictionless circular wire of unit radius is fixed on the horizontal plane. Two point particles of unit mass start moving simultaneously from point A (θ = π/2) with identical uniform angular speeds in opposite directions, and meet again at point B (θ = −π/2). During this time, which of the followi

Accepted Answer

Answer: (3) — P⃗₁ + P⃗₂ = mv sinθ î − mv cosθ ĵ + (−mv sinθ î − mv cosθ ĵ) PTotal = |P⃗₁ + P⃗₂| = 2mv cosθ At θ = π/2 PTotal = 0 At θ = −π/2 PTotal = 0 At θ = 0 PTotal max = 2mv So graph → (3)

Practice Re-NEET 2026 Exams