JEE Main 2002 Physics question
A bead of weight can slide on smooth circular wire in a vertical plane. The bead is attached by a light thread to the highest point of the wire and in equilibrium, the thread is taut and make an angle with the vertical then tension of the thread and reaction of the wire on the bead are
Answer: (2)
Solution
Let A be the highest point, O the centre and P the bead. Triangle OAP is isosceles (OA = OP = radius), and the thread AP makes angle with the vertical AO, so and . Take O as origin, A = (0, R). Then P = , the unit vector
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