1 / 9

Force

Force. A force is a push or a pull A force is an interaction between objects; they are exerted by one thing onto another thing Force is a vector quantity. Free Body Diagrams. A Free Body Diagram (FBD) is a visual representation of all the forces acting on a single object.

tamber
Download Presentation

Force

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. Force • A force is a push or a pull • A force is an interaction between objects; they are exerted by one thing onto another thing • Force is a vector quantity

  2. Free Body Diagrams A Free Body Diagram (FBD) is a visual representation of all the forces acting on a single object FBDs are extremely powerful problem solving tools that bridge the gap between qualitative analysis and a quantitative mathematical representation

  3. Drawing an FBD… • A simple dot can beusedtorepresenttheobject in question • IdentifytheforcesactingONthatobjectonly • Drawonearrowtorepresenteachforceacting ON theobject • Allarrowsshouldbedrawnfromthedotorthe center of theobject • Thearrowspoint in thedirection of theforce. • Thelength of thearrowrepresentstherelativemagnitude of theforce…ielongerarrows = largerforce

  4. Normal Force FN Fg Weight/ForceduetoGravity Example 1 A block of woodrestingon a desktop

  5. FN AppliedForce FA Friction f Fg Example 2 A block of woodmovingwith a constantvelocityacross a surface

  6. FN FA f Fg Example 3 A block of woodacceleratingtotherightacrossthesurface

  7. Tension T FN f Fg Example 4 A block of woodacceleratingtotherightwhenpulledby a rope at anangle

  8. Tension T Fg Example 5 A tetherballwhileswinging at a constantspeedaround a pole Notice there is nothing in the original description that says the tetherball is being hit. A diagram for the ball as it is being hit would show an additional force acting on the ball.

  9. Try it… Draw a FBD and write the 2nd law equations for a lawn mower being pushed at a constant speed

More Related