[2.7] Uniform Circular Motion

• UNIFORM CIRCULAR MOTION


  An object undergoes this type of motion when it moves in a circular path at a constant velocity.
• UNIFORM CIRCULAR MOTION

  The direction of velocity continuously changes therefore making the body accelerated.
• CENTRIPETAL ACCELERATION


  The inward acceleration resulting from the circular motion of a moving object.
• CENTRIPETAL ACCELERATION

  • Direction is always perpendicular to the velocity and is inward along the radius.
  • "center-seeking" or "toward the center"
• CENTRIPETAL FORCE


  Any force that acts on an object moving in a circular path, directed towards the center of that path.
• CENTRIPETAL FORCE

  It is not a fundamental force but rather a label for any force (Such as tension, gravity, or friction) that causes centripetal acceleration.
• CENTRIFUGAL FORCE

  • Often described as an "apparent force" that means to push objects outward when they are in a rotating system.
  • "center-fleeing" or "away from the center"
  • Arises from inertia.
  • It is a reaction force to the centripetal force.
• SPEED - NET FORCE RELATIONSHIP

  • 1S = 1N
  • 2S = 4N
  • 3S = 9N
• RADIUS - NET FORCE RELATIONSHIP

  • 1R = 1N
  • 2R = 1/2N
  • 3R = 1/3N
• MASS - NET FORCE RELATIONSHIP

  • 1M = 1N
  • 1/2M = 1/2N
  • 2M = 2N