RE-NEET2026Physics-Circular Motion
RE-NEET 2026 Physics Linear Momentum in Circular Motion MCQ Question
Type: MCQ-conceptual-Medium
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 = 3π/2). During this time, which of the following figures schematically represent the magnitude of the total linear momentum P of the system, as a function of θ?
Correct Answer
Option B
Detailed Explanation
The linear momentum of the system is zero at the starting and meeting points due to symmetry and opposite directions of motion. The momentum increases as they move apart and decreases as they approach each other again.
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