Uncertainties and Significant Figures
All measurements always have some uncertainty. We refer to the uncertainty as the error
in the measurement. Errors fall into two categories:
1. Systematic Error - errors resulting from measuring devices being out of
c
BEHR FREE-FALL LAB
OBJECTIVE
To analyze the motion of an object in Free-Fall by:
1) Analyzing the corresponding equations of motion.
2) Calculating the velocity at different times by using:
a) the tangent method
b) the equation of motion x = x(t)
c)
x
)
t
I zmggagoc
Mags Temperahe
Lenam (L3
Time (a)
Egme'eS i 3
FOrCQ rnL Flow RaC __é_
{2 {
D6n$\/: W33 _- m Area = L2
\Ioume L3 r
pfSSLH I: = m Volume' LS
area L 1.7
Mass Raie: M Speed '- f
R
All equahons mus'\ be 6nmensIoha/lx/ conaiaien+*
131'-
\l2 * a
Physics 4A: Collected Homework 1
1. Mathematical modeling and measurement. Around 235 BCE Eratosthenes of Alexandria found a way to measure the size of the Earth. He knew that at noon on the
summer solstice (June 22) in Syene (now called Aswan, in souther
Kinematics
Kinematics Equations
Falling Objects
Lana Sheridan
De Anza College
April 8, 2015
Overview
Part 1: Kinematics in 1 Dimension
Kinematics equations
Falling objects
Acceleration due to gravity
Part 2: Mathematical Background for 2-D Kinematics
Physics 4A: Newtonian Classical Mechanics
Lana Sheridan
De Anza College
April 6, 2015
Overview of the Course
Topics
Kinematics. Describing motion of objects without regard to
forces.
Dynamics. Finding the evolution of a system by considering
the forces
Error Propagation
The analysis of uncertainties (errors) in measurements and calculations is essential in the
physics laboratory. We will start with a review of differentials from calculus, introduce
partial derivatives, and then derive the general equati
Physics 4A Lab Syllabus
Instructor:
Email:
Homepage:
Office:
Office Phone:
Office Hours:
Final Exam Date:
Required:
Eduardo Luna
lunaeduardo@fhda.edu
http:/faculty.deanza.fhda.edu/lunaeduardo
S55A
408-864-8666
See class syllabus
During lab on the last wee
LAB REPORT GRADING RUBRIC
TITLE:
Lab Section
PARNERS
NAMES
TITLE
OBJECTIVE
THEORY
EQUIPMENT
PROCEDURE
THEORY
DATA
CALCULATIONS
CONCLUSION
FORMAT
Description of Section
1. Partners names at the upper right-hand
corner of the first page of the lab report.
1
Lab Report Format
Physics 2A, 4A-D
1. TITLE
Place the title of the lab experiment at the top of the first page.
2. OBJECTIVE
State the objective of the experiment clearly. The objective of the experiment is what youre trying to prove or
accomplish.
3. THE
Physics 4A: Collected Homework 4
Please do not attempt to write your solutions on this question paper! Solutions are not
considered complete without the logical argument and/or full calculation.
1. Light thread is wound round a solid (not hollow) spool. T
Physics 4A: Collected Homework 3
Please do not attempt to write your solutions on this question paper! Solutions are not
considered complete without the logical argument and/or full calculation.
1. A marble of mass m is dropped through a uid, starting fro
Physics 4A: Collected Homework 2
Please do not attempt to write your solutions on this question paper! Solutions are not
considered complete without the logical argument and/or full calculation.
1. Some road engineers in Montgomery, Alabama built a banked
Dynamics
Applying Newtons Laws
Rotating Frames
Lana Sheridan
De Anza College
April 29, 2015
Overview
wrap up accelerated frames
a 5 3.10 3 1024 and b5 0.870. Using this expression,
h day.
the terminal
speed for water droplets falling under
Rotatingfind
F
CENTER OF MASS
The motion of a system may appear to be quite difficult to describe because different particles
making up the system will have different position, velocity, and acceleration. However, as we
will see, it is not difficult to describe the moti
Physics - Car Braking Distances
Page 1 of 1
Physics Notes
Car Braking Distances
The following table comes from data originally published in Popular Science and AutoWeek magazines1.
Stopping distances are for new cars (1991-1995). The values of stopping di
NEWTON'S 2 nd LAW ON AN INCLINE PLANE
OBJECTIVE
In this experiment you will use Newtons 2nd Law and the equations of motion to
calculate the velocity of an object (glider) at the bottom of a frictionless, incline plane
when it is released from rest. First
NEWTONS 2nd LAW
OBJECTIVE
In this experiment you will confirm the validity of Newtons 2nd Law by analyzing the
motion of two objects (glider and a hanging mass) on a horizontal air track. First, you
will calculate the theoretical acceleration by applying
MOTION OF A CENTER OF MASS
Consider a system of particles where the position of the CM is given by:
mi ri
rcm
M
Taking the derivative wrt time gives:
drcm
dt
vcm
vi
M
dr
1
1
mi i
mi vi
M
dt M
velocity of i th particle
Mvcm
Psys
mi ri
d
dt
mi vi
Mvcm
pi
Ps
MOMENT OF INERTIA & CONSERVATION OF ENERGY
Objective
1. To experimentally calculate the moment of inertia of a disk (Idisk) , hoop (Ihoop) ,
and disk+hoop (Idisk+hoop)
2. Compare Idisk and Ihoop to their expected values:
1
M disk R 2
2
1
2
I hoop = M hoop
MEASUREMENTS AND ERROR ANALYSIS LAB
OBJECTIVE
1. To learn how to use the following measuring devices and understand the
uncertainties associated with them.
a)
b)
c)
d)
e)
f)
meter stick
metric ruler
triple-beam balance
digital balance
vernier calipers
mic