Newtons 1st Law

Newtons 1st Law

• A body continues in its initial state of rest or motion with uniform velocity unless acted upon by an unbalanced external force.
  • covers all non accelerating motion
  • implications of "unbalanced force" (sum of forces = 0)

Static Problems (static means no motion) as well as Force as a Vector

• Spring Scale Activity
  • required
    • three or four strings
    • large paper
    • spring scales
    • drawing
• Introduction to FBD's (Free Body Diagrams)
  • what goes on a FBD
    • forces
    • mass
  • what does not go on a FBD
    • all kinematics, velocity, acceleration, displacement
• Static Problems
  • balanced forces
  • by components