Flashcard Set Preview
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| 1 |
Newton's First Law of Physics
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An object's state of motion (its velocity) will not change unless a net force acts upon it....
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| 2 |
Law of Inertia
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same as Newton's 1st Law
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| 3 |
Def, inertia
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a property of objects- their natural resistance to change their state of motion
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Newton's Second Law
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Fnet= ma
**tells direction of object's acceleration but not direction of velocity!**
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What forces does Fnet sum?
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Fnet considers forces acting on object m (forces exerted by object are not included in...
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An object will always accelerate in the direction of the net force it feels. Why, and...
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-Because: m is always a positive number so direction of a is always same direction as...
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SI Unit of Force, N
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N= 1 kg*m/s2
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Newton's Third Law of Physics
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action-reaction pair, two forces of equal magnitude acting in opposite directions on different...
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| 9 |
def and eqn for weight
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the gravitational force exerted on an object by earth,
w = mg
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| 10 |
Newton's Law of Gravitation, def
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The magnitude of the gravitational force an object exerts is proportional to the product of...
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| 11 |
Eqn for Newton's Law of Gravitation
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Fgrav = G(Mm/r2)
**is an inverse square law**
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| 12 |
Eqn for finding value of gravitational acceleration, g
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g = G(M / r2)
*G is universal gravitational constant*
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| 13 |
Categories of friction
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Static (rolling)
Kinetic (sliding)
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| 14 |
Notes on coefficient of static friction
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-There is a maxiumum between two surfaces
-The max coeff static is always greater than the...
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| 15 |
Force due to gravity acting parallel to the inclined plane, eqn
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= mg sin θ, where θ is b/t incline and horizontal
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| 16 |
Normal force exerted by inclined plane, eqn
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= mg cos θ, where θ is b/t incline and horizontal
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| 17 |
def, pulley
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device that changes the direction of the tension force. can be used to decrease necessary...
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| 18 |
step-by-step approach using force diagram
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1) draw all forces acting on object
2) chose positive direction
3) find Fnet and set it equal...
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