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
PHYS 4A
Lab 10: CENTRIPETAL FORCE
Names: -Tu Vu-
Date: 10/31/2016-
In this laboratory exercise you will use an apparatus that allows you to rotate a mass M in a horizontal
circle. The mass is connected to a spring, and you can measure the radius R of the
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
Lab # 7: Ballistic Pendulum
Date: -10/19/2016-Names: -Tu Vu- - -INTRODUCTION
In this experiment, the speed of a projectile will be measured in two different ways;
through the use of conservation laws and using kinematic equations as in projecti
San Jose City College
PHYS 4A
Experiment 1: MEASUREMENT AND ERRORS ANALYSIS
Objectives
1.
To see how measurements and error analysis are a fundamental part of experimental science.
1.
To make some actual measurements and analyze the errors in them.
1.
To
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
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
kinematicsinlD I 3 http:/nebulade-anza.edu/~dicksonl4A/ldnematiesinID.html
Homework assignment for one dimensional kinematics, physics 4A
1. A dog sees a owerpot sail up and then back past a Window H high. If the total time the pot is in sight
is 1- secon
9 i
1. Find the angle such that the maximum height of a projectile is equal to its horizontal range.
2. Car A is traveling east at 20 mfs. As car A crosses the intersection shown in the diagram, car B
stargs from rest 40m north of the intersection and mov
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
Conservation of Momentum and Motion of the Center of Mass
Objective
1. Confirm the Law of Conservation of Momentum.
2. Determine if a collision is elastic or inelastic.
3. Confirm that the velocity of the center of mass is constant for an isolated system.