Physics lab 131
Experiment # 2
Brad Postovoit
Alfredo Giron
10/12/15
Purpose
In this experiment we will gather data for the speed and the distance traveled of an object as a function
of time. We will plot these data both by hand and also with the aid of a
Physics 131 Homework Solutions Chapter 4
8. Our coordinate system has i pointed east and pointed north. The ﬁrst displacement
is ii” = (483 km)i and the second is PM = (—966 km)?
(a) The net displacement is
ac = PM +330 =(433 km)i—(966 kmﬁ
which yields ma
KINEMATICS
The branch of physics that provides a mathematical description of motion is
kinematics. Dynamics which will be discussed later relates changes in motion
to forces.
The changes in position of an object with respect to its surroundings is
referre
California Polytechnic State University
Instructor: Dr. Benzahra
Newtons Second and Third Law Problem
A small block of mass = 1kg is exerting a force from the left on an averagesize block
of mass = 2kg and the averagesize block is exerting a force from
California Polytechnic State University
Instructor: Dr. Benzahra
Physics 131 test 1
Date: January 28, 2013
Take g to be 10m/s2 in these 3 problems.
1) A ball is thrown straight up with a speed of 10.0 m/s from a thirdfloor window
located 15.0 m above gro
Sevak Hakobyan
Conclusion:
In this experiment, we investigated simple harmonic motion by using springmass
system. We found k value which is the spring constant by using two different methods. In the
first method, we hanged mass from the spring and measur
Problem 1
Eric, a graduate student at New York University, decides to return to Los Angeles for the
holidays. Because his airline does not offer direct service, he first flies from New York to
Philadelphia. From Philadelphia, he flies to Los Angeles, a di
California State Polytechnic University, Pomona
Happy Hour 1
Physics 131
NAME_
Spring 2006
Last
First
There are 5 problems. For the first four problems you must show your way
clearly. There will not be any credit for just the answer, even if it happens to
Problem 1
Let:
r
A
r = displacement vector from New York to Philadelphia
Br = displacement vector from Philadelphia to Los Angeles
C = displacement vector from New York to Los Angeles
!
!
!
(a)
r r r
A+ B=C
r r r
A=C"B
Bx = "(2400mi) cos10 = "2364mi
By =
Physics 131
Summary of Chapter 5
Th Laws of Motion
In this chapter we answer the question; WHY OBJECT MOVES.
What is Force:
 A force is a push or a pull
 A force acts on an object
 A force requir
Summary to Chapter 3
Physics 131
The Vectors
Point P can be represented by x, and y, The
Cartesian Coordinate, or r, and !, The Polar
Coordinate.
P
y
r
!
x
Relating Equations:
If; r, and ! are known:
If; x, and
Summary of Chapter 4
Motion in Two Dimensions
Physics 131

The position of the object moving in two dimension is represented by vector r.

The displacement is r = r  ro

Average velocity = r / t

Instantaneous velocity = lim r / t, dr / dt
t 0

Aver
Summary to Chapter 2
Physics 131
Motion in One Dimension
Motion:
If the position of an object changes in time, we say the object is in motion.
Mechanics:
Study of motion is the subject of mechanics.
1) Kinematics:
How the object moves
2) Dynamics:
Why the
Physics lab 131
Experiment # 3
Brad Postovoit
Alfredo Giron
10/19/15
Purpose
In this experiment we will look at several cases of objects that are not initially in translational
equilibrium and determine the equilibrants experimentally. We will also test t
Name: I: '\[
A 15 kg block is dragged over a rough, horizontal surface by a 70 N force acting at 20
above the horizontal. The block is displaced S m, and the coefcient of kinetic friction is
0.30. Find the work done on the block by (a) the 70 N force, (b)
Written Homework #1 Solutions
1. A day is equivalent to 86400 seconds and a meter is equivalent to a million
micrometers, so
(3.7m ) (10 6 m m )
= 3.1 m s.
(14 day) (86400s day)
2. The density of gold is
m 19.32 g
= =
Written Homework #2 Solutions
! !
!
1. We label the displacement vectors A , B , and C (and denote the result of their
!
vector sum as r ). We choose east as the i direction (+x direction) and north as the
!
j
wavelength vs. inverse frequency
35
30
25
f(x) = 25437.19x  48.53
20
wavelength (cm)
15
10
5
0
0
0
0
0
0
0
0
inverse frequency (s)
Questions:
#1. If the room temperature decreases, the wavelength would be shorter because velocity of sound
v
would be smal
Sevak Hakobyan
Conclusion: In this experiment, we observed resonant standing waves on vibrating string and
determined the frequency of the vibrating string. To find the frequency, we experimentally
measured tension and resonant wavelengths, then plugged i
Sevak Hakobyan
Conclusion:
In this experiment, we determined to coefficient of linear expansion for copper, stainless
steel, aluminum. We used boiler to heat up tubes, expansion apparatus to measure the distance
increased, and digital multimeter to measur
Sevak Hakobyan
Conclusion:
In this experiment, my partner and I found specific gravities of aluminum block,
aluminum cylinder, rock, and cork, using the Archimedes Principle. For part A, to find the
specific gravities of substances, we calculated the rati
Chapter 8
Potential Energy and
Conservation of Energy
81 Potential Energy
Potential energy U is energy that can be associated
with the configuration of a system of objects that exert
forces on one another
o
Gravitational potential energy Ug: objectearth
Chapter 6
Force and MotionII
61 Friction
Two experiments:
o
o
Push a book at a constant speed across the counter. There
must be an equal and opposite force opposing you,
otherwise the book would accelerate. Again the force is
parallel to the surface and
Chapter 7
Kinetic Energy and Work
71 Kinetic Energy
Energy:
o
o
o
Is a scalar quantity assigned to an object or a
system of objects
Can be changed from one form to another
Is conserved in a closed system, that is the total
amount of energy of all types i
, Part I (There are 10 multiple choice questions)
I Make sure you put your name, and ID number on the SCANTRON form. The answers for the multiple
‘ choice Questions are to be placed on the SCANTRON. Use a pencil to ﬁll in answers on the
‘ SCANTRON. Make s
Physics 131
Homework Solutions
Chapter 1
Fall 2015
3. The metric prefixes (micro, pico, nano, ) are given for ready reference on the
inside front cover of the textbook (see also Table 12).
(a) Since 1
Physics lab 131
Experiment # 2
Brad Postovoit
Alfredo Giron
10/12/15
Purpose
In this experiment we will gather data for the speed and the distance traveled of an object as a function
of time. We will plot these data both by hand and also with the aid of a
Physics lab 131
Experiment # 4
Brad Postovoit
Alfredo Giron
10/26/15
Purpose
In this experiment we will use Newtons second law to predict the acceleration of a system that
is directly proportional to the net force acting on it and inversely proportional t
Physics lab 131
Experiment # 6
Brad Postovoit
Alfredo Giron
11/09/15
Purpose
We will investigate elastic and inelastic collisions between two cars in this experiment. We will
measure the initial momentum of the system and the final momentum for the system
Physics lab 131
Experiment # 5
Brad Postovoit
Alfredo Giron
11/01/15
Purpose
In this experiment we will measure the speed of a body in uniform circular motion, the radius of
its circular path, and the net force acting on it. We will use these data to see