Question

how does a pully help us​

Answer 1

Answer:

it reduces the friction

Answer 2

Explanation:

Well, pulleys help us by changing the direction of the force we use to lift an object. ... The real mechanical advantage of a pulley is in using many pulleys at once. Using multiple pulleys decreases the amount of force necessary to move an object by increasing the amount of rope used to raise the object.

hope it's helpful