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12 Cards in this Set

  • Front
  • Back
newtons First Law
Objects velocity doesnt change unless acted upon by a force
Newtons Second Law
Fnet = ma, acceleration is always in same direction as force (NOT velocity).
Newtons Third Law
To every action there is equal but opposite reaction.
Effects of the forces are different
Newtons Law of Gravitation
Fgravity = G* Mm/r^2,
g= G * M/r^2
Static Friction
When there is no sliding (no relative motion between surfaces)
Kinetic Friction
When there is relative motion between surfaces (sliding)
Normal Force
Force that acts perpendicular to the surface
Force of Kinetic Friction
F =m (k) * F (n)
m (k) - coefficient of kinetic friction
Direction of the force is opposite to the direction of velocity (parallel to surface)
Maximum Force of Static Friction
Fmax = m (s)* F (n)
m (s) - coefficient of static friction
Direction of force opposite to the direction of intended velocity
Force due to gravity acting parallel to the inclined plane
F = mg sin (incline angle)
Normal force exerted by inclined plane
F = mgcos (incline angle)
Device that changes direction of tension that pulls on the object that string is attached to