Adam uses a fixed pulley, such as the one shown below, to lift an object. adam applies an input force to the pulley as he pulls down to lift the object. as he does this, adam wonders about how the pulley is him. how is the pulley adam lift the object?

When Adam applies a ‘pull’ force on the pulley, there is an output force that the pulley lets out, directly pulling the object with it. We cannot always pull up objects with our bear hands, no matter how much force we apply. Which is why pulleys allow us to apply the force and pulleys do the work of pulling the objects for us, since work and force come hand in hand.