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Problem on bead sliding on a ring related to centripetal acceleration and gravity

  • Thread starter Paranjape
  • Start date
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1. Homework Statement

A bead rests on smooth vertical ring of radius R. Bead is given a slight push so that it slides down around the ring. At some instance the bead is at angular position θ with vertical then choose correct option from the following
A. acceleration of bead is vertical at θ = cos-1 (1/3)
B. acceleration of bead is horizontal at θ = π - cos-1 (1/3)
C. acceleration of bead is vertical at θ = π/2
D. acceleration of bead is horizontal at θ = cos-1 (1/3)



2. Homework Equations

Diagram in the attached file


3. The Attempt at a Solution
In the attached file
 

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