PHY2048-515 Exam I Chapters 1-5
Name Panther ID
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Some
problems are conceptual some you'll need to do some calculations. Circle your answer. Each question
Chapter 9: Rotation of rigid bodies
Rotational kinematics
Linear VS Angular kinematics
Its really similar!
Definition of moments of inertia and determination of
rotational kinetic energy
Youve already done it in HMWK CH 6 (The kinetic
energy of a rot
Very very important Pre-requisites:
c
Trigonometry:
Basic definitions:
sin=? cos=? tg=?
Algebra:
b
quadratic equation
If ax2+bx+c=0, x=?
Linear Equations of multiple variables:
y=k1x+b1, y=k2x+b2
(slope and x,y intercept)
Chain rules:
Calculus:
dx N
N 1
=
Geometric vs Componentwise Vector Addition
Learning Goal: To understand that adding vectors by using geometry and by using components gives the same result, and that manipulating vectors with components is much easier. Vectors may be manipulated either ge
Welcome!
Requirement and Syllabus: www.fiu.edu/~leguo
How do you know if this class is for you?
Are you ready to commit 12 hrs minimum outside of the
class? (in order to get at least a C)
Will you complete the homework independently?
Will you come to offi
PHY2048-515 Exam III Chapters 13-15
Name_ Panther ID
It: PLEASE NOTE ONLY THREE OF THE SHORT ANSWER PROBLEMS WILL BE GRADED 3.3
It: YOU MAY ATTEMPT THEM ALL BUT INDICATE WHICH ONE YOU'D LIKE GRADED It;
MULTIPLE. CHOICE. Choose the one alternative that bes
Page [1
Chapter 8: Momentum, Impulse, and Collisions
1.) When a large, heavy truck collides with a passenger car, the occupants of
the car are more likely to be hurt than the driver. Why?
Fir/{Mug :' - ack ,4 :7 wxig 'ErJ Law Fwy
m (a: _,_ CV A; 6?
Summary (CH1 and CH2)
Vectors decomposition
Vector addition
V = Vx i + Vy =| V | cos i + | V | sin
j
j
Vtot = (V1x + V2 x )i + (V1y + V2 y )
j
V1y + V2 y
tg =
V1x + V2 x
| Vtot |= (V1x + V2 x ) 2 + (V1y + V2 y ) 2
Average velocity/acceleration
1d mot
Physics 2048 Exam 2
Page 2/7
Panther ID:_
Instructions: Read the test carefully. Answer only the questions asked of you. Be
as neat as possible and clearly mark your answers a frustrated grader will be
less likely to give you the benefit of the doubt on t
PHY2048 recitation notes week 7
Ch 6 review:
1. Scalar product: Scalar product (dot product) of two vectors:
= + +
= cos
2. Work done by a force: Work done by a force acting on a particle that undergoes a
displacement is given by
= = cos
Work
MasteringPhysics
4/10/09 12:01 AM
[ Assignment View ]
Course PHY121(TTH)
HW #10
Due at 11:59pm on Sunday, April 12, 2009
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Parallel Axis Theorem
The parallel axis theorem relates
, the moment of inertia of an object about an axis passin
Hookes Law
Experiment
PHY2053March26,y
Introduction
Hookes Law is the statement that the restoring force acting on an object is proportional to the negative
of the displacement (deformation) of the object. In symbols,
F = -k x
Where F is the restoring for
10.2.IDENTIFY: Fl with l rsin . Add the two torques to calculate the net torque.
SET UP: Let counterclockwise torques be positive.
EXECUTE: 1 F1l1 (800 N)(500 m) 400 N m.
2 F2l2 (120 N)(200 m)sin300 120 N m. 1 2 280 N m. The net torque is
280 N m, clockw
8.51.
IDENTIFY:
m1x1 m2 x2 m3 x3 L
.
m1 m2 m3 L
mA 0300 kg, mB 0400 kg, mC 0200 kg.
SET UP:
EXECUTE:
xcm
Apply xcm
xcm
mA x A mB xB mC xC
.
m A mB mC
(0300 kg)(0200 m) (0400 kg)(0100 m) (0200 kg)(0300 m)
00444 m.
0300 kg 0400 kg 0200 kg
ycm
m A y A m
9.34.
IDENTIFY:
K 12 I 2 . Use Table 9.2 to calculate I.
1 ML2 . 1 rpm 01047 rad/s
I 12
SET UP:
EXECUTE:
1 (117 kg)(208 m) 2 422 kg m 2 .
(a) I 12
01047 rad/s
(2400 rev/min)
251 rad/s.
1 rev/min
K 12 I 2 12 (422 kg m 2 )(251 rad/s) 2 1 33
106 J.
2
9.1.IDENTIFY: s r , with in radians.
SET UP: rad 180.
s 150 m
0600 rad 344
EXECUTE: (a)
r 250 m
s
140 cm
627 cm
(b) r
(128)( rad/180)
(c) s r (150 m)(0700 rad) 105 m
9.2.
EVALUATE: An angle is the ratio of two lengths and is dimensionless. But, when
8.1.IDENTIFY and SET UP:
EXECUTE:
(b) (i) v
p mv. K 1 mv 2 .
2
(a) p (10,000 kg)(120 m/s) 120 105 kg m/s
p 120 105 kg m/s
600 m/s. (ii)
m
2000 kg
vSUV
1 m v2
2 T T
2
12 mSUV vSUV
, so
mT
10,000 kg
vT
(120 m/s) 268 m/s
mSUV
2000 kg
EVALUATE: The SUV m
m v mB vB , x
m1x1 m2 x2 m3 x3 L
, vcm, x A A, x
, and Px Mvcm x . There is
m1 m2 m3 L
m A mB
only one component of position and velocity.
SET UP: m A 1200 kg, mB 1800 kg. M mA mB 3000 kg. Let x be to the right and let
the origin be at the center of mass
D 2 - 1
d
to calculate the angular velocity and av- z
to
Dt
t2 - t1
dt
calculate the average angular velocity for the specified time interval.
EXECUTE: gt + b t 3 ; g 0.400 rad/s, b 0.0120 rad/s3
9.5.IDENTIFY and SET UP:
Use z
d
g + 3b t 2
dt
(b) At t 0
10.19.
IDENTIFY:
Apply K K cm K rot .
SET UP: For an object that is rolling without slipping, vcm R.
EXECUTE: The fraction of the total kinetic energy that is rotational is
(1/2) I cm 2
2
(1/2) Mvcm
(1/2) I cm 2
1
2
1 ( M/I cm )vcm
/ 2
1
1 ( MR 2 /I cm )
PIIY2048-515 Exam 11 Chapters 6-11
Name Panther ID
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Some
problems are conceptual some you'll need to do some calculations. Circle your answer. Each quest
Lecture Notes PHY143
UiTM Pulau Pinang
PHY 143
Basic Physics For Engineers I
E-Notes
Prepared by
Mohd Noor Mohd Ali
Physics Lecturer
Applied Science Department
University Teknologi MARA Pulau Pinang
Offered Since July 2007
1
Lecture Notes PHY143
UiTM Pula
Physics 142 Fall 2008 - Solutions to Problem Set 2
1) Ohanian 23-5
2) Ohanian 23-57
3) Ohanian 23-9
4) Ohanian 23-11
5) Ohanian 23-34
23-34
6) Ohanian 23-39
23-7
Above is the solution given by Ohanian. You can see example 6 in Chapter 23 for
details of fi
Welcome!
Requirement and Syllabus: www.fiu.edu/~leguo
How do you know if this class is for you?
Are you ready to commit 12 hrs minimum outside of the
class? (in order to get at least a C)
Will you complete the homework independently?
Will you come to offi
Key to the success in this class
Time: You need to spend enough hours on it.
Learn smartly: Study groups, office hour, etc.
Practice, practice, and practice: HMWK, End-ofchapter problems
Pre-lecture: Read the book before
Post-lecture: Read the book (slide
Key to the success in this class
Time: You need to spend enough hours on it.
Learn smartly: Study groups, office hour, etc.
Practice, practice, and practice: HMWK, End-ofchapter problems
Pre-lecture: Read the book before
Post-lecture: Read the book (slide
PHY2048 Extra credit problem (CH1,2,3)
Instructor: Lei Guo Student Name:_ Student Panther ID_
An object is moving in a circular motion with a constant speed. The circle has its center
at the origin, and the radius is r. Its x and y positions are both func
Chapter 6: Work and Kinetic Energy
What is work done by a force
What is kinetic energy
work-energy theorem
How to calculate work done by a varying
force along a curved path
The meaning and calculation of power in a
physical situation
Work, a force th
Chapter 7: Potential energy and energy conservation
Two types of Potential energy
gravitational and elastic potential energy
Conservation of total mechanical energy
When
What: Kinetic energy+Potential energy
Sometimes total mechanical energy is not