1 / 19

Newton’s Universal Law of Gravitation

Newton’s Universal Law of Gravitation. Factors Affecting the Gravitational Force. mass. distance. Mass. m 1. m 2. decrease mass . decreased. force. force varies directly with masses. F g α m 1 m 2. Distance. r. increase r . force. decreased. Force varies inversely with

lottie
Download Presentation

Newton’s Universal Law of Gravitation

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. Newton’s Universal Law of Gravitation

  2. Factors Affecting the Gravitational Force mass distance

  3. Mass m1 m2 decrease mass  decreased force force varies directly with masses Fgα m1 m2

  4. Distance r increase r  force decreased

  5. Force varies inversely with distance squared Fgα 1/r2

  6. Fg α m1m2 Fgα 1/r2 m1 m2 Fg α -------- r2 Fg slope = G m1 m2/r2

  7. G = 6.67 x 10-11 N m2/kg2

  8. A 1000 kg car and a 2000 kg truck are 0.50 m apart. Gravitational force: 5.3 x 10-4 N

  9. Computing mass of Earth radius of Earth: 6.37 x 106 m 1.00 kg mass has a weight of 9.81 N mass of Earth: 5.97 x 1024 kg

  10. 2F 4F

  11. ¼ F 4F

  12. F

  13. “g” gravitational field – weight per mass wtg Fg g = ------ = ------ mass m G M = ------ r2 M = planet mass

  14. Effect of changing variables GM g = ----- r2 if M doubles: if r doubles: if M & r doubles: if r becomes ½: 2g ¼ g ½ g 4g

  15. Mars mass: 11% mass of Earth radius: 53% radius of Earth gravitational field for Mars? 0.39 gE = 3.84 N/kg

  16. Net gravitational force on bottom mass? s M M s s M √3 GM2/s2

  17. G m1 m2 Fg = ---------- r2 = weight What would happen to your weight if: Earth had twice mass but the same radius: Twice weight Earth had twice radius but same mass: ¼ weight

  18. What is “g” at top of Mt. Everest (8848 m elevation)? 9.77 N/kg = 9.77 m/s2

More Related