Chapter 13: Oscillations
I Repeating patterns
A T is the time for one repeat cycle, called the period
B f = 1/T is the frequency in s-1 = Hz
II Simple Harmonic Motion (SHM) described
A Moving an object from stable equilibrium results in a restoring force
Chapter 14: Waves
I) Waves transport Energy
A) Transverse vs. Longitudinal
B) Waves pass through the medium without dragging it along
C) Water waves are both Transverse and Longitudinal
D) Wavelength: = repeat distance
E) Period: T = 1/f = time for one cy
SYLLABUS
Physics 211
Fall 2009
GRADING:
The following is an approximate
breakdown of how grades will be
calculated:
Fred Jarka
Phone: 330.305.6877
[email protected]
Tests (3)
Labs
HW
Final Exam
Total:
300
200
100
120
720
825 742
741 660
659 577
576 49
Chapter 3: Vectors and 2D
I.
Vector is scalar + direction: displacement
II.
Math: net is the resultant vector; = +
C
A
B
A.Addition tip-to-tail or parallelogram
B. Subtraction: = + (- )
A
B
A
B
C. Division: = /t; a = v/ t
v
r
D. can be magnitude/directio
Chapter 7: Work and Kinetic Energy
I) Work = Fdcos where is the angle between the two vectors when tail-to-tail
A) 1J = 1Nm = 1 kgm2/s2
B) To have work done, object must move, and 90
C) Not a vector but can be negative
D) Work is an Energy transfer
II) Ki
Chapter 2: Linear Motion
I.
II.
III.
Location
A. Distance vs. Displacement: x = xf - xi
B. Speed vs. Velocity
C. v = x/t xf = xi + vxt
Graphs: position vs. time
A. Slope of line connecting two curve points = vav =
v
B. Slope of (tangent to) curve = insta
Chapter 6: Newtons Laws Applied
I) Force Examples
A) Friction: f = N is useful for traction and keeping things put, but $ to reduce
1) Kinetic friction when objects slide (k,s on page 149)
Independent of speed
Independent of contact area
Parallel to surfa
Chapter 4: 2D Motion
I) Same equations with x or y depending on direction
A) Treat motion in x and y directions separately
B) Put x and y subscripts on velocity and acceleration
II)Projectiles: ignore air resistance
A) ax = 0, ay = -g
B) x & y are indepen
Chapter 8: Potential Energy and Conservation
I. Conservative & Nonconservative Forces
A.Conservative: energy from work is retrievable
i. gravity
ii.springs
iii.zero work done when you return to start (closed path)
iv.movement from A to B is independent of
Chapter 11: Rotation, Torque and Equilibrium
I. Torque: = rFsin
A.
90 and big r gives max torque
B.
CCW is +
C.
= I mirrors F = ma
II.
Static Equilibrium
A.
= 0
B.
Measure r for all torques from the same location, chosen to
simplify calculations. Typica
Intro & Ch 1: Physics, Units, Significant Digits
I. Introduction
A. Instructor: Name
B. Course: Book, MP, Lab TS220, Syllabus
C. Aids: me, library, former students, study groups, study guide ?
II. Physics
A. Areas: mechanics, fluids, materials, waves, hea
Chapter 15: Fluids
I) Density: = M/V (table p. 500)
II) Pressure: P = F/A
A) Units: N/m2 = Pa, 1 Atm = 1.01 x 105 Pa = 14.7 psi, 1bar = 105 Pa
B) Gauge pressure: Pg = P Patm
C) Pressure at a depth: P2 = P1 + gh
1) Barometers: Pat = gh
2) 1Atm = 760mmHg(to
Chapter 16: Temperature and Heat
I) Thermodynamics vocabulary
A) Heat (Q) is energy transferred due to a temperature difference
B) Thermal contact occurs when heat is transferred
C) Thermal equilibrium is when heat flow stops because objects are at the sa
Chapter 18: Thermodynamics
I) 0th law: If A, B & C are in thermal contact and TA=TC &TB=TC then TA=TB
II) 1st law: Any change in internal energy is caused by heat added or work done by the
system
A) U = Q W (remember eqn. 17.15: U = nRT)
1) Q > 0 for heat
Chapter 9: Linear Momentum
I) Momentum is a vector involving mass and velocity
A)
B) Units: kgm/s
II) Impulse:
A) F is reduced if t is increased by padding in a collision
B) If I = 0 then p f = p i and momentum is conserved
C) Favg is due to external forc
Chapter 12: Gravity
I. F
Gm1 m2
where G = 6.67 x 10-11 Nm2/kg2
2
r
A. Inverse square properties
B. All masses are affected by this force but since G is small, F is small for small masses
C. Setting m g = FG gives g GM E where ME and RE are for the Earth o
Chapter 10: Rotation
I. Radians
A. = s/r
B. rad = 180
r
r
s
II. Motion of Rotation
A. av = /t
B. T = 2/
C. = / t
D. Equations of motion in chapter 3 replace: x, v, a
E. vt = r, ac = r2, at = r
F. Rolling: rotation + translation so: vtop = 2v and vbottom =
Chapter 5: Newton's Laws
I. Newton's first law(inertia)
A. Forces push or pull
B. Mass(amount of matter) is a measure of how difficult it is to change
v
st
C. 1 Law: Object retains v if no net force acts on it(things stay the way they are)
i. magnitude a