A bob of mass m attached to an inextensible string of length ℓ is suspended from a vertical support. The bob rotates in a horizontal circle with an angular speed ω rad/s about the vertical. About the point of suspension:

Engineering

Physics

Angular Momentum and Conservation of Angular Momentum

Question

angular momentum changes in magnitude but not in direction.

angular momentum is conserved.

angular momentum changes both in direction and magnitude.

angular momentum changes in direction but not in magnitude.

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τ of my changes direction but not magnitude.