1 / 15

Pulleys

Pulleys. Charlie Haffey Norwood Elementary Science. For Simplicity. Weights will be in pounds. A ten pound box weighs ten pounds. A ten kilogram box Weighs 98 Newtons. What Is A Pulley?. A wheel With a groove Can be flat C an be single or multiple.

taylor
Télécharger la présentation

Pulleys

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Pulleys Charlie Haffey Norwood Elementary Science

  2. For Simplicity Weights will be in pounds. A ten pound box weighs ten pounds. A ten kilogram box Weighs 98 Newtons.

  3. What Is A Pulley? A wheel With a groove Can be flat Can be single or multiple

  4. http://farm7.staticflickr.com/6047/6335553351_bb7f4baf46_z.jpghttp://farm7.staticflickr.com/6047/6335553351_bb7f4baf46_z.jpg http://3.imimg.com/data3/MB/PU/MY-5187183/step-pulleys-250x250.jpg http://img.ehowcdn.com/article-new/ehow/images/a05/qp/dl/mechanical-advantage-block-tackle-800x800.jpg http://wpcontent.answcdn.com/wikipedia/commons/thumb/b/be/Flachriemen.png/220px-Flachriemen.png

  5. 100 lbs. 100 lbs. 100 lbs.

  6. Fixed Pulley 100 lbs. E 100 lbs.

  7. Specifically Work = Force x Distance W = F x D To lift a 100 lb box 2 feet off the ground 2 feet of rope are reeled in.

  8. 50 lbs. 50 lbs. 100 lbs.

  9. MoveablePulley 50 lbs. 50 lbs. 100 lbs.

  10. CombinationPulleys 50 lbs. 50 lbs. Double Pulley 100 lbs.

  11. The Big Tradeoff Work = Force x Distance W = F x D The force is decreased by half. How much rope is reeled in to lift the box 2 feet off the ground?

  12. CombinationPulleys 50 lbs. 50 lbs. Double Pulley E 100 lbs. 2

  13. Instant Challenge In the following example, The force is decreased by _____. How much rope is reeled in to lift the box 2 feet off the ground?

  14. CombinationPulleys 25 lbs. Double Pulley E 100 lbs. 4 4D

  15. Pulleys Charlie Haffey Norwood Elementary Science

More Related