It is easy to draw water from a well when the rope passes over a pulley than drawing it directly. Because :

Pulley adds more force

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Pulley decreases the weight of the bucket

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Pulley has a mechanical advantage of more than one

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Pulley changes the direction of force

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Solution

The correct option is C Pulley changes the direction of force
Pulley changes the direction of force. That's why it easy to draw water from well.
Ans- option-D

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