question_answer

Why is it easier to draw water from a well using a pulley instead of simply pulling a bucket up with a rope?

A)  The pulley helps us change the direction of the force.

B)                         The pulley gives us the energy to pull the water up.

C)                         The water weighs much more when a pulley is used.

D)                         The water is pulled through a shorter distance with a pulley.