Question

Use the diagram of a pulley system to answer the question.

An illustration shows pulleys lifting heavy bricks to the top of a building.

What is the only function of the pulleys in the diagram?

(1 point)
Responses

to change the amount of energy needed to raise the bricks
to change the amount of energy needed to raise the bricks

to change the mass of the bricks to make it easy to raise
to change the mass of the bricks to make it easy to raise

to change the direction of the force applied to raise the bricks
to change the direction of the force applied to raise the bricks

to change the duration of time to raise the bricks
to change the duration of time to raise the bricks

Answer 1

to change the direction of the force applied to raise the bricks

Explanation: the pulley redirects the rope so the person can pull down while the load goes up. It does not change the mass or the total energy/work required (ignoring friction).