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Kinetics of Particles

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m = 30kg. T = ? At 0 degree. Determine the angle at which the ball stops ? Problem 13-80 ... length of 3m, N & a = ? Thank You. m = 80 kg, NC =? Problem 13.60 ... – PowerPoint PPT presentation

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Title: Kinetics of Particles


1
King Fahd University of Petroleum Minerals
  • Mechanical Engineering
  • Dynamics ME 201
  • BY
  • Dr. Meyassar N. Al-Haddad
  • Lecture 11

2
Rectangular Coordinates
3
Normal and Tangential CoordinatesCurve path and
y f (x) problems
4
Free-Body Diagram
  • Select the object
  • Establish n, t, b coordinate system
  • Set an always acts in the positive n direction
  • Assume at acts in the positive t
  • Set W mg always acts in a vertical
    directiondownward
  • Set normal force FN along normal line
  • Set frictional force Ff opposite to t direction

n
  • tan-1(dy/dx)
  • Between vertical and normal
  • positive negative

an
Ff
at
FN
t
mg
5
Review
  • Example 13-6
  • Example 13-7
  • Example 13-8
  • Example 13-9

6
  • Problem 13.8
  • v 65 ft/s
    aA ?
  • smooth slope
  • W 150 lb
  • g 32.2
    ft/s2
  • m W/g


7
  • Problem 13.68
  • m 30kg
  • T ? At 0
    degree

8
Determine the angle at which the ball stops ?
9
  • Problem 13-80

  • w 5 lb k 10 lb/ft

  • unstretched length of 3m, N a ?

10

11
Thank You
12
  • m 80 kg, NC ?

Problem 13.60
13
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