1 / 13

Focus Assignment:

9.5 Force Diagrams. Focus Assignment:. A car with an automatic transmission is in drive. The driver has his foot on the brake. 2)The driver then releases his foot off the brake. Sketch the two scenarios using arrows that represent the different forces present. 3. Free Body Diagram.

lorna
Download Presentation

Focus Assignment:

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. 9.5 Force Diagrams Focus Assignment: • A car with an automatic transmission is in drive. • The driver has his foot on the brake. • 2)The driver then releases his foot off the brake. • Sketch the two scenarios using arrows that represent the different forces present.

  2. 3. Free Body Diagram Picture representation used to show forces acting on an object

  3. 4. Force of Gravity (Fgrav) a.k.a. weight. It’s equal to the mass times the acceleration due to gravity w = mg Fgrav = mg

  4. 5. Normal Force (Fnorm) opposes force of gravity; always acts perpendicular to the surface Fnorm

  5. a push or pull on an object other than gravity 6. Force Applied (Fapp) Fapp

  6. opposite to the motion of the applied force, always parallel to the surface 7. Force of Friction (Ffric) Ffric Fapp This shows STATIC FRICTION. Both arrows are equal AND opposite, canceling each other out resulting in no acceleration (a.k.a. balanced force)

  7. opposite to the motion of the applied force, always parallel to the surface 7. Force of Friction (Ffric) Ffric Fapp This shows KINETIC FRICTION. The arrows are NOT equal. This results in an acceleration (a.k.a. UNbalanced force) in the direction of the larger force.

  8. Putting It All Together: Static Friction Force Diagram Fnorm Ffric Fapp Fgrav = mg

  9. Putting It All Together: Kinetic Friction Force Diagram Fnorm Ffric Fapp Fgrav = mg

  10. Scenario 1: A car at a red light Fnormal Fgravity

  11. Scenario 2: A car speeding up Fnormal FFric, Air Fapplied Fgravity

  12. Scenario 3: A car traveling at constant speed Fnormal FFric, Air Fapplied Fgravity

  13. Scenario 3: A car slowing down Fnormal FFric, Air Fapplied Fgravity

More Related