This Spool may Fool you!

Classical Mechanics Level 2

A spool is a cylindrical device, which has discs fixed at its ends that have bigger radius than the cylinder.

A thread is wound on the cylindrical portion and its one end is pulled, as shown in the diagram above. If the ground is perfectly smooth (coefficient of friction = 0), how will the spool move?

The spool will move towards the right and rotate clockwise The spool will move towards the left and rotate counterclockwise The spool will move towards the right and rotate counterclockwise The spool will move towards the left and rotate clockwise

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