Momentum and CollisionHard

Question

A bead can slide a smooth a straight wire and a particle of mass m attached to the bead by a light string of length string of length L . The particle is held in context with the wire and with the string taut and is then let fall. It the bead has mass2m then when the string makes an angle θ with the wire the bead will have slipped a distance

Options

A.L(1 - cos θ)
B.(1 - cos θ)
C.(1 - cos θ)
D.(1 - cos θ)

Solution

Let x = displacement of ring to the left.
⇒ ᐃxcm =
⇒ x = - (1 - cos θ)

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