1 / 7

The Horse Before the Cart

The Horse Before the Cart. A Physics Phable By Leo Takahashi, The Pennsylvania State University, Beaver Campus. Newton’s 3 rd Law says: If I exert a force on the cart, the cart exerts an equal and opposite force on me!. Once upon a time there was a horse. His owner hitched him to a cart.

eliora
Download Presentation

The Horse Before the Cart

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. The Horse Before the Cart A Physics Phable By Leo Takahashi, The Pennsylvania State University, Beaver Campus

  2. Newton’s 3rd Law says: If I exert a force on the cart, the cart exerts an equal and opposite force on me! Once upon a time there was a horse. His owner hitched him to a cart. Then Things got interesting: Read your physics Textbook! Those forces add up to zero, so I can’t move the cart. No point in my pulling on your cart. No Way! Says who? What? Why not? Nope; I can’t do that. Isaac Newton, that’s who. Giddeappe! Let’s Go!

  3. Equal-Opposite; F = 0; a = 0; no motion HELP!!!!!!! OH NOOOOOO!!! Wait a minute; I did read that. There are three laws, and the fist one does say “net force of zero means a body at rest stays at rest, and the third law talks about equal and opposite forces, so that means….. 2nd Law 3rd Law Horse Cart

  4. Physics Guru A HORSE IS NOT A CART! Look at them separately!!

  5. Force on Cart by the Horse, F Force on Horse by the Cart, F Equal and Opposite Backward force Fgof ground on cart Response to the Horse’s effort: A Forward force FG of ground on horse

  6. AHA! If FG> F and F> Fg The NET Force on Each is Forward!! Horse and Cart accelerate forward together!!!!! GIDDEAPPE!!!!! IIt takes more than horse sense to grok Newton’s Laws F F FG Fg

  7. The End

More Related