Universal Law of Gravitation

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Lesson about Universal Law of Gravitation

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Universal Law of Gravitation

  1. 1. Tuesday October 24 <ul><li>Objective: SWBAT explain gravitational force changes with mass and distance. </li></ul><ul><li>A-Team: </li></ul><ul><li>Homework: Read pg. 352-354 in book, Blood Pressure in Space wksht </li></ul><ul><li>Catalyst: What’s one thing you’ve decided to do in order to reach your big goal this quarter? </li></ul>
  2. 2. <ul><li>Time is up </li></ul><ul><li>(No. No complaining. </li></ul><ul><li>Five minutes every day.) </li></ul>
  3. 3. Universal Law of Gravitation <ul><li>Before we start… today I’ll give you a hint </li></ul><ul><li>This is the moment where you start taking some notes. </li></ul><ul><li>Today you will do that on the front side of your worksheet. </li></ul>
  4. 4. Universal Law of Gravitation <ul><li>Gravity is a universal force </li></ul><ul><li>There’s a fancy equation we need to know about </li></ul>The force Gravitational Constant Mass of object 1 Mass of object 2 A distance apart from each other in meters (and squared)
  5. 5. 4 things to know <ul><li>1. Gravity is a force, and things that are forces are measured in </li></ul>Newtons
  6. 6.  2. G is a constant. WARNING: It’s an ugly looking number. Example of another constant that you know?
  7. 7. 4 things to know <ul><li>3. As mass increases, force increases </li></ul><ul><li>This makes sense if we look at the equation </li></ul>If the number on the top part of the fraction gets bigger, then the whole answer is going to be bigger
  8. 8. 4 things to know <ul><li>3. As mass increases, force increases </li></ul>
  9. 9. 4 things to know <ul><li>3. As mass increases, force increases </li></ul>
  10. 10. 4 things to know <ul><li>3. As mass increases, force increases </li></ul>
  11. 11. 4 things to know <ul><li>4. As distance increases, force decreases </li></ul><ul><li>This makes sense if we look at the equation </li></ul>If the number on the bottom part of the fraction gets bigger, then the whole answer is going to be smaller
  12. 12. 4 things to know <ul><li>4. As distance increases, force decreases </li></ul>
  13. 13. 4 things to know <ul><li>4. As distance increases, force decreases </li></ul>Both go to Turner and get to sit next to each other in class Close together, strong attraction
  14. 14. 4 things to know <ul><li>4. As distance increases, force decreases </li></ul>He goes to Roosevelt and she goes to Turner Further away, much less attraction
  15. 15. Let’s recap <ul><li>Gravity is a force measured in Newtons </li></ul><ul><li>G in the equation is a constant </li></ul><ul><li>As mass increases, force increases </li></ul><ul><li>As distance increases, force decreases </li></ul>

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