CP Workbook
Equilibrium on an Inclined Plane
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Refer to the following information for the next question.
The block is at rest on a horizontal surface. The normal support force
n
is equal and opposite to weight
W
.
There is ____ because the block has no tendency to slide.
friction
no friction
Refer to the following information for the next four questions.
At rest on the incline, friction acts. Note in the diagram to the right that the resultant
f + n
, shown by the dashed vector, is equal and opposite to
W
.
Here we see that the size of
n
is ____ the size of
W
.
less than
equal to
greater than
You draw the resultant
f + n
for the block at rest on the steeper incline.
The resultant magnitude of
f + n
is ____ the magnitude of
W
.
less than
equal to
greater than
As the angle of the incline increases, the magnitude of vector n
decreases
stays the same
increases
The block remains at rest on the still steeper incline.
You draw in the vectors for equilibrium.
How does the resultant
f + n
compare to
W
?
Refer to the following information for the next four questions.
Suppose the angle is increased and the block slides down the incline at constant velocity.
Then the net force on the block is
zero.
greater than zero.
If the angle is increased even further, then acceleration
occurs
doesn't occur
Further steepness of the incline means ____ acceleration down the plane.
less
more
When the incline is vertical, acceleration is
less than g
g
more than g
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Forces Acting at an Angle
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Properties of Friction
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Springs and Blocks
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Force Vectors and the Parallelogram Rule
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Freebody Diagrams
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Gravitational Interactions
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Incline Places: Force Vector Resultants
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Inertia
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Mobiles: Rotational Equilibrium
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Net Force
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Newton's Law of Motion: Friction
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Static Equilibrium
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Tensions and Equilibrium
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Acceleration
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Air Resistance #1
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An Apple on a Table
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Apex #1
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Apex #2
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Falling Rock
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Falling Spheres
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Friction
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Gravitation #1
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Head-on Collisions #2
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Sailboats #1
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Sailboats #2
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Scale Reading
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Settling
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Skidding Distances
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Spiral Tube
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Tensile Strength
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Terminal Velocity
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Tug of War #1
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Tug of War #2
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Two-block Systems
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Advanced Properties of Freely Falling Bodies #1
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Advanced Properties of Freely Falling Bodies #2
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Charged Projectiles in Uniform Electric Fields
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Combining Kinematics and Dynamics
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Distinguishing 2nd and 3rd Law Forces
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Force vs Displacement Graphs
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Paul G. Hewitt
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