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16 Cards in this Set
- Front
- Back
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Dynamics
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The study of forces and how they affect motion.
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Newton's 1st Law
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An object maintains constant velocity (or zero velocity) unless acted upon by an external unbalanced force.
Law of Inertia |
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Newton's 2nd Law
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Net force = mass * acceleration
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Newton's 3rd Law
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Forces come in pairs. If A exerts a force on B, B exerts a force equal in magnitued and opposite in direction back on A.
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Newtons (the unit)
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g
or Gravitational Force Constant or Gravitational Field Strength |
9.8 N/kg
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Weight
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m*g
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Force
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A push or a pull. Forces can only exist between 2 objects.
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unbalanced external forces cause an object to...
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speed up
or slow down or turn |
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Ramp (no friction)
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Force Parallel on a ramp
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force parallel is m*g*sin(theta)
Force parallel is not a force, but rather the force of gravity along the ramp. |
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Force Normal on a ramp
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m*g*cos(theta)
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Two Kinds of Friction
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kinetic friction
static friction |
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Static Friction
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Friction between two surfaces not sliding.
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Kinetic Friction
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Friction between two surfaces sliding past one another.
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Ramp (with Friction)
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