,
,\
Chapter 8Conservation of Energ
MULTIPLE CHOICE
1. A single conservative force Fx = (6.0x - 12) N (x is in m) acts on a particle moving along the x axis.
The potential energy associated with this force is assigned a value of +20 J at x = 0. What is th
1. If M = 6.0 kg, what is the tension in string 1?
a.
b.
c.
d.
e.
39 N
34 N
29 N
44 N
51 N
ANS: E
DIF: Challenging
2. A block is pushed up a frictionless 30 incline by an applied force as shown. If F = 25 N and M = 3.0 kg,
what is the magnitude of the res
Chapter 7
Energy of a System
Introduction to Energy
The concept of energy is one of the most
important topics in science and engineering
Every physical process that occurs in the
Universe involves energy and energy
transfers or transformations
Energy is n
MACT 1121: Calculus I, Spring 2015
Review for Midterm 2
Page Number
Type
190
Concept
1-6, 8-10
Check
True-False 1-9, 11,12
Quiz
Exercise
1,2,3,5,6,10,11,13,15,21,23,
25,27,29,33,35,37,39,45,46,
47,49,50,53,54,55,59,60,61,
63,65,67,77,86,87
190
191
Problem
Past Quizzes
Multiple Choice
Identify the choice that best completes the statement or answers the question.
7 7
1. A 3.0-kg ball with an initial velocity of (41+ 3j) m/s collides with a wall and rebounds with a velocity of (-41
+ 3j) m/s. What is the impu
PHYSIOII Final Exam Review
Cha ters29 9.1-9.7 10 17 17.4 and 19
Questions (1-3) refer to the following situation: The gure below shows a graph of angular velocity
versus time for a man bicycling around a circular track.
mown
61:
4x
21:
z 4 W0 14 16
-21:
4
Selected Pgwums (5mm Past-nal Exams
2)a-After a 0.300493 rubber baii is dropped from a height of 1.75 m, it bounces off a
\ concrete floor and rebounds to a height of 1.50 m. (a) Determine the magnitude and
\t 1 direction of the impulse delivered to the
Linear Momentum
p mv
Momentum can be expressed in component form:
px = m vx
py = m vy
dv d mv dp
F ma m
dt
dt
dt
pz = m vz
Conservation of momentum can be expressed
mathematically in various ways
ptotal = p1 + p2 = constant
p1i + p2i = p1f + p2f
pix = pf
Chapter 8
Conservation of Energy
Energy Review
Kinetic Energy
Potential Energy
Associated with movement of members of a
system
Determined by the configuration of the system
Gravitational and Elastic
Internal Energy
Related to the temperature of the system
Chapter 5
The Laws of Motion
Sir Isaac Newton
1642 1727
Formulated basic laws
of mechanics
Discovered Law of
Universal Gravitation
Invented form of
calculus
Many observations
dealing with light and
optics
Force
What force (if any) causes the Moon to orbit
Chapter 5
1.
A 14.0-lb block rests on the floor.
(a) What force does the floor exert on the block?
magnitude
14 lb
direction
upward
(b) If a rope is tied to the block and run vertically over a pulley, and the other end is
attached to a free-hanging 10.5-l
Chapter 7 Problem Session
1. A 4.0-kg block is lowered down a 37 incline a distance of 5.0 m from point A to point B. A horizontal force
(F = 10 N) is applied to the block between A and B as shown in the figure. The kinetic energy of the block at
A is 10
Chapter 8 Problem Session
1. A 20-kg mass is fastened to a light spring (k = 380 N/m) that passes over a pulley as shown. The
pulley is frictionless, and the mass is released from rest when the spring is unstretched. After the
mass has dropped 0.40 m, wha
THE WRITING CENTER
Academic Services Phone: 962-7710
www.unc.edu/depts/wcweb/
How to Write a Literature Review
What This Handout is About
This handout will explain what a Literature Review is and offer insights into the form and
construction of a Literatu
WRITING A LITERATURE REVIEW
Source: Language Center, Asian Institute of Technology
WHAT IS THE LITERATURE?
Although you might think of novels and poetry when you hear the word "literature," for a piece of
research the meaning is more specific. In terms of
Cha ter 7Ener
of a S stem
MULTIPLE CHOICE
1. A constant force of 12 N in the positive x direction acts on a 4.0-kg object as it moves from the origin
to the point 111. How much work is done by the given force during this displacement?
-$ r.) A: t\ " n
a
Linear Momentum
p mv
Momentum can be expressed in component form:
px = m vx
py = m vy
dv d mv dp
F ma m
dt
dt
dt
pz = m vz
Conservation of momentum can be expressed
mathematically in various ways
ptotal = p1 + p2 = constant
p1i + p2i = p1f + p2f
pix = pf