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Rotation around a fixed axis

Holt Physics Ch 1-2

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Physics
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Classical mechanics
kinematics
Physical quantities
motion
Acceleration
Velocity
Linear motion
Displacement
Mass
Motion graphs and derivatives
Rotation around a fixed axis

Holt Physics?Chapter 1 The Science of Physics Important Chapter 1 Topics: Physics (?the study of the physical world?-p.4) is an attempt to explain and understand the world around us--from tiny subatomic particles to massive swirling galaxies! The scientific method-p.6 Dimensional analysis, or the conversion algorithm-p.22 Significant figures-p.16 Scientific notation Chapter 2 Motion in One Dimension Section 2.1 Displacement and Velocity One dimensional motion=linear motion (back and forth) Frame of reference and relativity make physics easier Displacement is the difference between where something starts and where it ends up. It is expressed as ?x = xf ? xi where xf is the final position and xi is the initial position. (insert gecko picture from p.41)

M review

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Physics
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Classical mechanics
Introductory physics
Rotation
motion
Rotation around a fixed axis
Angular momentum
Force
Momentum
Acceleration
Circular motion

1 Position(x, y or z) Displacement (?x, ?y or ?z) Change in position. Depends only on initial and final positions, not on path. Includes direction. ?x = ?vdt Velocity (v) Displacement per unit time Average velocity vave = ?x/?t Instantaneous velocity v = dx/dt ?v = ?adt Acceleration (a) A change in velocity: speeding up, slowing down, or turning. Average acceleration aave = ?v/?t Instantaneous acceleration a = dv/dt Problem: Acceleration (B-1993) 1. In which of the following situations would an object be accelerated? I. It moves in a straight line at constant speed. II. It moves with uniform circular motion. III. It travels as a projectile in a gravitational field with negligible air resistance. (A) I only (B) III only (C) I and II only

Physics

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Physics
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Rotation
Classical mechanics
Celestial mechanics
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kinematics
Rotation around a fixed axis
Acceleration
Angular acceleration
Circular orbit
Centripetal force
Orbit

Chapter 7 ? Rotational Motion and the Law of Gravity This chapter deals with rotational kinematics ? the relationships between rotational position, velocity, acceleration and time. Rotational dynamics will be discussed in the next chapter. Dynamics deals with energy, momentum, and forces. Universal gravitation is also discussed in this chapter in part since satellite and planetary motion involves rotation. Angular displacement, velocity, and acceleration Angle (() can be defined in terms of radius (r) and arc length (s) on a circle as

Motion in Two Dimensions

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Physics
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Physics
Classical mechanics
Rotation
Mechanics
Force
Celestial mechanics
Rotation around a fixed axis
Centripetal force
Acceleration
Banked turn
Circular motion
Uniform circular motion

Chapter 7 Problems 1, 2, 3 = straightforward, intermediate, challenging = full solution available in Student Solutions Manual/Study Guide = co ached solution with hints available at www.cp7e.com = biomedical application Section 7.1 Angular Speed and Angular Acceleration 1. The tires on a new compact car have a diameter of 2.0 ft and are warranted for 60 000 miles. (a) Determine the angle (in radians) through which one of these tires will rotate during the warranty period. (b) How many revolutions of the tire are equivalent to your answer in (a)? 2. A wheel has a radius of 4.1 m. How far (path length) does a point on the circumference travel if the wheel is rotated through angles of 30?, 30 rad, and 30 rev, respectively?
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