A farmer is using a rope and pulley to lift a bucket of water from the bottom of a well that is hy = 11 m deep.?

NetherCraft 0

The farmer uses a force F1 = 59 N to pull the bucket of water directly upwards. The total mass of the bucket of water is mb + mw = 3.7 kg.

Calculate how much work Wf in J the farmer does on the bucket of water (via the rope) to raise it to ground level.

Calculate how much work Wg in J gravity does on the bucket filled with water as the farmer lifts it up the well.

Also Check This  Do Instant Mashed Potatoes go bad?

Calculate the net work Wnet in J done on the bucket of water by the two forces F1 and Fg.

Ch5 (2)

1 Answer

  • (3.5kg x g) = 36.26N. (9.8 used for g).

    Work done by farmer = (fd) = 59 x 11 = Wf of 649 Joules.

    Work done by gravity = (36.26 x 11) = Wg of 398.86 Joules.

    Net work done = (649 – 398.86) = 250.14 Joules.

Leave a Reply

Your email address will not be published. Required fields are marked *