forces on an inclined plane
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Forces on an inclined Plane. DN/RKS. kg, m, s Equations: Linear: Y=3x + 2 Quadratic: y= 2x 2 + 5x + 2 Exponential: y = 4 x Inverse: y = 2/x 3) (a) +4 m/s ( d) -3 m/s 2. 4) Distance, Displacement: 6m, 3 m east 15 m, 13 m approximately northeast 10 m, 6 m south

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Presentation Transcript
slide3
kg, m, s
  • Equations:
    • Linear: Y=3x + 2
    • Quadratic: y= 2x2 + 5x + 2
    • Exponential: y = 4x
    • Inverse: y = 2/x

3) (a) +4 m/s (d) -3 m/s2

slide4
4) Distance, Displacement:
    • 6m, 3 m east
    • 15 m, 13 m approximately northeast
    • 10 m, 6 m south

5) Speed, Velocity

  • 3 m/s, 1.5 m/s east
  • 7.5 m/s, 6.5 m/s approximately east
  • 5m/s, 3m/s south
slide5
Units of velocity? m/s
  • Units of acceleration? m/s2
  • Units of force? N or mkg/s2
  • Units of distance? m
  • Formula for average acceleration? Change in velocity/time
  • Formula for average velocity? Change in displacement/time
  • Formula for average speed? Change in distance/time
  • What is the constant acceleration of gravity on earth? -10m/s2
  • One type of field force? gravity
  • Three trig function ratios? Sin = O/H Cos = A/H Tan = O/A
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Quick Refresh
  • What is the acceleration of a 5.0kg box on a frictionless surface with an applied force of 8 N?
quick refresh1
Quick Refresh
  • What is the normal force if a 5.0kg box is resting on a table?
notes
Notes:
  • What is an inclined plane?
    • A flat surface that makes an angle with the horizontal
notes1
Notes
  • How will I find the normal force on an inclined plane?
    • Draw free body diagarm
    • Normal force is PERPENDICULAR to surface!
    • Find force perpendicular to surface (usually just gravity)
    • Fnormal=-Fperpendicular
notes2
Notes
  • How will I find the acceleration of an object on an inclined plane?
    • Draw free body diagarm
    • Acceleration will be parallel to surface!
    • Find forces parallel to surface
    • F parallel = maparallel
slide11
What is the acceleration and the normal force of a 4.0 kg box on a frictionless surface at a 30⁰ angle?
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