Rotational Dynamics
Friday, October 20, 2 017
11:53 A M
Linear Dynamic motion and acceleration: F=ma or a=F/m
F causes an acceleration
The larger the m the smaller the acce
Fluids static
Monday, October 30, 2 017
12:02 PM
From last time
P2 = P1+pgh
P2 = lower point p1= higher
or
P=P0+pgh
Mercury Barometer
Hg
P=0- higher point
Capillary
Fill with Hg
Waves
Wednesday, November 8, 2 017
12:06 PM
Which is correct about the above plot?
A) + velocity and + acceleration
B) + velocity and - acceleration
C) + velocity and 0 acce
Rotational Motion II
Monday, October 16, 2 017
12:01 PM
V1
1) Centripetal Acceleration
V1
General circular motion
Effect of the system acceleration
|v1|=
v
v = v2-v1*
V2
*The dir
Fluids
Friday, October 27, 2 017
12:05 PM
Density and Pressure
Density Why? Same shape, same volume or material, may have different mass.
Density = mass/volume
Rho -> P =m/v =
More on the Buoyant Force
Wednesday, November 1, 2 017
12:05 PM
Objects Free in Fluids
Dense objects sink (accelerate downwards)
Behavior: P object vs Pfluid= fluid displaced
Waves and Sound
Friday, November 10, 2 017
12:03 PM
Mechanical Waves: fundamentals
Need a medium, differ from light waves which do not need a medium thy can propagate
Transver
Fluids Dynamics
Friday, November 3, 2 017
12:57 PM
Fluids in motion
Ideal fluid
4 requirements
Without too much of a stretch you can identify fluids that do not behave
id
Work and Energy pt2
Monday, October 2, 2 017
12:01 PM
Last time: relation between work and kinetic energy
Wnet = KEf-KEi work energy relation
Wnet= 1/2 mv-1/2mv0
Relation bet
Work and Energy
Friday, September 29, 2 017
11:58 A M
If you exert some force over some distance
Work: application of a force over a distance
W=F(cos)d
F and d are both
Physics 141
COURSE OUTLINE
Fall 2016
v. 082316
Instructor:
Office:
Phone:
Email:
Prof. Kurt Warncke
N222 MSC
404-727-2975
kwarncke@physics.emory.edu
Texts and Accessories
Serway & Vuille, College Phy
Advanced Placement Physics
Study Guide and Review
Jansen
Aliso Niguel High School
Fall 2000 - Spring 2001
Comments, corrections, or clarifications: bjansen@capousd.k12.ca.usa
Table of Contents
1.
Phys
Gravity and
Oscillations
Oscillations
OSCILLATIONS
x
Oscillations are caused by a vibrating object.
m
Known as: Simple Harmonic Motion, SHM .
To oscillate an object must be displaced a
distance x , an
Traveling Waves
Waves and Sound
Traveling Wave
A disturbance that travels at a specific speed.
Mechanical Wave
These are traveling waves that involve the vibrations of a
physical substance in a medium
Physics 40S Problems Work, Kinetic Energy and Momentum
1. A constant 20.0 N force acts for 10.0 s on a 5.00 kg object, which is initially at rest.
a) What is the objects final momentum?
b) What is the
1. the speed of galaxies can be measured by using
a. hubbles constant
b. speed of light
c.doppler shift
d. parallax
2. the reddish skies during a "sunset" can be explained by the wave effect:
a. red s
Page 1
D. We calculate work to find mechanical energy:
= = ( + ) (. ) + . ) ( )(. ) = . =
C. He performs the same amount of work. However, with a small rear sprocket the force is higher but the
dist
1) B: 11.4 h
t = d/v = (630 mi)/(55.3 mi/hr) = 11.4 hr
2) A: increase
g increases as you get closer to the surface of the Earth, as is approximately 9.8 m/s2 at the Earths surface.
3) C: instantaneous
3)
a)
At r > r2, the entire charge Q is enclosed. Thus the potential is:
=
=
b)
By Gausss law, we get that:
=
=
=
( ( )
( )
= () =
( )
( + )
=
Where is the charge density
c)
At r < r1, qenc
a)
We apply Keplers third law:
=
(. + . ) (. )(. )
=
= .
b)
We apply the formula for gravitation:
=
(. )(. )
=
= . /
(. + . )
c)
Weight is equal to mass times acceleration due to gravity:
= =
1. Suppose we built a base on one of jupiter's small moons (a distance of 5AU from the Sun). How
fast would you have to launch a rocker from there to reach a moon of Saturn (10 AU away)?
(assume the s
a)
We use an equation that relations angular velocity to angular acceleration:
= +
= (
) + (. )
= . /
b)
We use an equation that relations angular displacement to angular acceleration and velo
Here we want to find the area under the curve from t = 0 to t = 4 sec, since the integration of
angular velocity with respect to time gives angular displacement:
= (
) ( ) + (
) ( ) = = .
a)
We use
In which direction is the positively charged particle deflected?
1.
2.
3. into the screen
3 i
h
4. out of the screen
5.
6.
+
v
B
45
Apply the RHR:
) p
g
your right hand in the direction of the velocit
090913
Physics 151
Vectors
1) Coordinate Systems
X,y graph
-(x1,y1)
-any coordinate system is composed of orthogonal (perpendicular) directions
-Cartesian coordinates
-Polar Coordinates
- We use r and
091613
Laws of motion (I)
1) What is a Force? (or, why things move)
2) More on Reference Frames and Newtons 1st Law
3) Mass
4) Newtons 2nd Law
Why do Things Move?
Up until now we have been discussing