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Olympiad workbookNSEPRotational Motion

A string of length l , tied to the top of a pole, carries a ball at its other end as shown. On giving the ball a single hand blow perpendicular to the string, it acquires an initial velocity v₀ in the horizontal plane and moves in a spiral of decreasing radius by curling itself around the pole. Therefore,

Options

Athe instantaneous centre of revolution of the ball is the point of contact of the string with the pole at that
Bthe instantaneous centre of revolution of the ball will be fixed at the point where the string was initially f
Cthe angular momentum of the system will not be conserved.
Dthe angular momentum of the system will be conserved.

Correct answer

C. the angular momentum of the system will not be conserved.

Step-by-step solution

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