1 / 6

Pulleys

Pulleys. Reagan Thompson Zack Hartfield Chloe Duval. Pulley Basics. A pulley is a wheel on an axel designed to support movement of a cable or belt along circumference. Pulley system consist of a rope or cable and one or more pulleys

leola
Download Presentation

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 Reagan Thompson Zack Hartfield Chloe Duval

  2. Pulley Basics • A pulley is a wheel on an axel designed to support movement of a cable or belt along circumference. • Pulley system consist of a rope or cable and one or more pulleys • Three types of pulley systems. Fixed, Moveable, Combined • Pulley System isn’t efficient due to force of friction. Example, one has to pull two meters of rope/cable in order to lift an object one meter.

  3. Fixed Pulley • A fixed pulley is the only pulley that when used individually, uses more effort than the  load to lift the load from the ground. • A fixed pulley is attached to a hook or wall and doesn’t move. •  The advantage of the fixed pulley is that you do not have to pull or push  the pulley up and down. • The disadvantage is that you have to apply more effort than the load

  4. Moveable Pulley A movable  pulley  is a pulley that moves with the load. • The movable pulley allows the effort to be less than the weight of the load. The movable pulley also acts as a second class lever. The load is between the fulcrum and the effort. • The main advantage of a movable pulley is that you use less effort to pull the load. • The main disadvantage of a movable pulley is that you have to pull or push the pulley up or down.

  5. Combined Pulley • A combined pulley makes life easier as the effort needed to lift the load is less than  half the weight of the load. • The main advantage of this pulley is that the amount of effort is less than half of the load. • The main disadvantage is it travels a very long distance.

  6. Review Questions • What is a pulley? • A fixed pulley is ______ and doesn’t ________ • What was this slideshow about?

More Related