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Dynamics > Memory List > Flashcards

Memory List Flashcards

1
Q

Kinematics

A

The study of the mathematics of motion without regard to the forces involved.

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2
Q

Kinetics

A

The study of the force-motion relationship.

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3
Q

Particle Dynamics

A

An object whose motion may be analyzed without regard to rotation about an axis through the object.

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4
Q

Rigid Body

A

An object whose motion may not be analyzed without regard to rotation about an axis through the object.

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5
Q

Position Vector

A

A vector whose tip indicates the location of a point (particle) or a point on a rigid body.

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6
Q

Velocity Equation

A
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7
Q

Acceleration Equation

A
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8
Q

V-DOT-S-V Equation

A
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9
Q

Cartesian Coordinates

A

Rectangular Coordinates

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10
Q

Vector

A

A vector has magnitude and direction.

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11
Q

Position Vector in Cylindrical Coordinates

A
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12
Q

Velocity Vector in Cylindrical Coordinates

A
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13
Q

Acceleration Vector in Cylindrical Coordinates

A
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14
Q

Particle

A

An object whose motion may be analyzed without regard to rotation about an axis through an object.

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15
Q

Clues to use Rectangular Coordinates

A
  1. Rectilinear Motion
  2. Simple Projectile Motion
  3. Acceleration in a given direction that depends only on time and/or motion parameters in that direction.
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16
Q

Velocity in Normal & Tangental Coordinates

A
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17
Q

Acceleration in Normal & Tangental Coordinates

A
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18
Q

Path

A

Locations of the tips of the r-bars.

19
Q

Relative Position

(Position of B with respect to A)

A
20
Q

Newton’s 1st Law

A

An object in motion will remain in motion with a constant velocity unless acted upon by an unbalanced external force. An object at rest will remain at rest unless acted upon by an unbalanced external force.

21
Q

Newton’s 2nd Law

A
22
Q

Newton’s 3rd Law

A

The forces of action and reaction are equal in magnitude, but opposite in sign.

23
Q

Inertial Reference Frame

A

Fixed reference frame.

24
Q

Inertia

A

Resistance to acceleration.

25
Q

Linear Momentum

A
26
Q

Rules for Drawing a FBD

A
  1. Select system
  2. Replace every other object by the force or forces (moments) it exerts on the system.
  3. Assumptions
  4. Kinematics
  5. Kinetics
  6. Solve for unknowns
  7. Sub into equations
27
Q

What is true about every kinematics problem?

A

Every kinetics problem is also a kinematics problem.

28
Q

Units

A

Standards for physical quantities.

29
Q

Newton

A

The force required to accelerate a mass of 1 kg at a rate of 1 m/s2 .

30
Q

Pound Force

A

The force required to accelerate a mass of 1 lbm at a rate of 32.2 ft/s2 .

31
Q

Weight of 1 lbm

A

The weight of 1 lbm on earth is 1 lbf.

32
Q

Wabrek’s Rules for Those Who Hate English Units

A
  1. Masses must have units of mass (lbm, ozm).
  2. Forces must have units of force (lbf, ozf).
  3. Convert as necessary, usually with
    1 lbf / (1 lbm x 32.2 ft/s2)
33
Q

Linear Impulse & Momentum Equation

A
34
Q

Linear Impulse

A
35
Q

Clues to use Impulse & Momentum Equation

A
  1. Collision, separation, and/or relative motion of 2 or more particles.
  2. ∆t is given or asked for.
  3. Favg is given or asked for.
36
Q

Fundamental Concept of Impulse & Momentum Equation

A

Conservation of Linear Momentum in the Universe

37
Q

Source of the Impulse & Momentum Equation

A

Newton’s 2nd law integrated over time.

38
Q

Standard Assumptions for Collisions

A
  1. Ignore all non-impact forces during the event.
  2. No change in position during impact.
  3. Instantaneous ∆v for objects.
39
Q

Coefficient of Restitution

A
40
Q

Euler’s Second Law

A
41
Q

Angular Impulse & Momentum Equation

A
42
Q

Angular Momentum of a Particle About Point O

A
43
Q

Source of the Work & Energy Equation

A

Newton’s 2nd Law, Integrated over Displacement

44
Q

Significance of the Work & Energy Equation

A

Conservation of Mechanical Energy

Dynamics (1 decks)

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