Homework:
(1) Read Sec. 2-10.
(2) 1-6, 16, 20, 29-31, 33, 46, 48, 50
2. Compute your average velocity in the following two cases: (a)
You walk 73.2 m at a speed of 1.22 m/s and then run 73.2 m at a
speed of 2.85 m/s along a straight track. (b) You walk fo
Homework: 49, 56, 67, 60, 64, 74 (p. 234-237)
49. A bullet of mass 10g strikes a ballistic pendulum of mass 2kg. The
center of mass of the pendulum rises a vertical distance of 12 cm.
Assuming that the bullet remains embedded in the pendulum, calculate
th
Physics 1: Mechanics
Phan Bo Ngc
office: A1.512B, email: [email protected]
HCMIU, Vietnam National University
website:
http:/www.hcmiu.edu.vn/webdirectory/Home/profile/pbngoc.aspx
No of credits: 02 (30 teaching hours)
Textbook: Halliday/Resnick/Walker
Part C Dynamics and Statics of Rigid Body
Chapter 5 Rotation of a Rigid Body
About a Fixed Axis
5.1. Rotational Variables
5.2. Rotation with Constant Angular Acceleration
5.3. Kinetic Energy of Rotation, Rotational Inertia
5.4.
5.5.
5.6.
5.7.
5.8.
Torque,
Homework: 53, 56 (p. 270-271); 26, 38 (p. 299-300)
Final exam: Chapter 7, 8, 9, 10, 11 (textbook)
Read 11-12 Precession of a Gyroscope
53. The figure below shows a uniform disk that can rotate around its
center like a merry-go-round. The disk has a radius
Homework: 6, 7, 11, 20, 27, 29, 54, 58, 66
!
2
i
j
6. An electrons!
position is given by r = 3.00t 4.00t + 2.00k with t
in seconds and r in meters. (a) In unit-vector notation, what is the
!
!
electrons velocity v(t)? At t=3.00 s, what is v (b) in unit ve
Homework: 24, 56 (pages 191-194);
2, 5, 13, 14, 22, 25, 38 (pages 230-233)
24. A block of mass m = 2.0 kg is dropped from height h = 50 cm
onto a spring of spring constant k = 1960 N/m. Find the maximum
distance the spring is compressed.
Gravitational pot
3.4.2. Conservative Forces (gravitational and spring force)
and Potential Energy
The work done by a force F=F(x):
xf
xi
W F ( x)dx
xf
U -W xi F ( x)dx
a. Gravitational Potential Energy
U -W (mg)dy mg(y f yi )
yf
yi
At a certain height y:
U U U i mg(y yi )
Homework: 1, 2, 8, 15, 24, 26, 29, 36, 43 (p. 159-163)
1. A proton (mass m=1.67 x 10-27 kg) is being accelerated along a
straight line at 3.6 x 1015 m/s2 in a machine. If the proton has an
initial speed of 2.4 x 107 m/s and travels 3.5 cm, what then is
(a
Homework: 49, 51, 70 (p. 134-137)
49. In the figure below, a car is driven at constant speed over a
circular hill and then into a circular valley with the same radius. At
the top of the hill, the normal force on the driver from the car seat
is 0. The driv
Homework: 5, 9, 19, 25, 31, 34, 39 (p 130-134)
5. A 3.0 kg block is initially at rest on a horizontal surface. A force F of
magnitude 6.0 N and a vertical force P are then applied to the block.
The coefficients of friction for the block and surface are s=
Homework: 3, 5, 7, 13, 24, 34, 45, 49, 51, 56, 57, 59
3. If the 1 kg standard body has an acceleration of 2.00 m/s2 at
20.00 to the positive direction of an x axis, what are (a) the x
component and (b) the y component of the net force acting on the
body,
Assignment Physics 1
1. Two carts, one twice the mass of the other, experience the same force for the
same time. What is their difference in momentum? What is their difference in
kinetic energy?
2. A 12 g bullet is fired horizontally into a 96 g wooden bl
PROGRAM OF
PHYSICS
Lecturer: Dr. DO Xuan Hoi
Room 413
E-mail : [email protected]
PHYSICS 2
(FLUID MECHANICS AND THERMAL
PHYSICS)
02 credits (30 periods)
Chapter 1 Fluid Mechanics
Chapter 2 Heat, Temperature and the Zeroth
Law of
Thermodynamics
Chapter 3
PROGRAM OF
PHYSICS
Lecturer: Dr. DO Xuan Hoi
Room 413
E-mail : [email protected]
PHYSICS 4
(Wave, Light, and Atoms )
02 credits (30 periods)
Chapter 1 Vibration and Mechanical Wave
Chapter 2 Properties of Light
Chapter 3 Introduction to Quantum Physics
PHYSICS 2, CHAPTER 5
ADDITIONAL PROBLEMS
1. A Carnot engine has an efficiency of.22.0% . It operates between constant-temperature
reservoirs differing in temperature by 75.0 Co. What is the temperature of the
(a) lower temperature and
(b) higher-temperatu
PHYSICS 2, CHAPTER 4
ADDITIONAL PROBLEMS
1. Air that initially occupies 0.140 m3 at a gauge pressure of 103.0 kPa is expanded isothermally to
a pressure of 101.3 kPa and then cooled at constant pressure until it reaches its initial volume.
Compute the wor
PHYSICS 2, CHAPTER 3
ADDITIONAL PROBLEMS
1. In Fig. 1, a gas sample expands from V0 to 4.0V0 while its pressure
decreases from P0 to P0 /4.0. If V0 = 1.0 m3 and P0 = 40 Pa, how much
work is done by the gas if its pressure changes
with volume via
(a) path
PHYSICS 1, CHAPTER 2
ADDITIONAL PROBLEMS
1. A 15.0-lb block rests on the floor.
(a) What force does the floor exert on the block?
(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 10.0-lb
PHYSICS 2, CHAPTER 1
ADDITIONAL PROBLEMS
1. In a car lift used in a service station, compressed air exerts a force on a small piston that has a
circular cross section and a radius of 5.00 cm. This pressure is transmitted by a liquid to a piston
that has a
PHYSICS 1, CHAPTER 2
ADDITIONAL PROBLEMS
1. A 15.0-lb block rests on the floor.
(a) What force does the floor exert on the block?
(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 10.0-lb
PHYSICS 1, CHAPTER 1
ADDITIONAL PROBLEMS
1. A jet lands on an aircraft carrier at 63 m/s.
(a) What is its acceleration if it stops in 2.0 s?
(b) What is the displacement of the plane while it is stopping?
ANSWER: (a) -31 m/s2 (b) 63 m
2. A person walks fi
POM
ADDITIONAL PRACTICE PROBLEMS
Problem 1
Peachy Keen, Inc., makes mohair sweaters, blouses with Peter Pan collars, pedal pushers,
poodle skirts, and other popular clothing styles of the 1950s. The average demand for
mohair sweaters is 100 per week. Peac
Part C Dynamics and Statics of Rigid Body
Chapter 5 Rotation of a Rigid Body
About a Fixed Axis
5.1.RotationalVariables
5.2.RotationwithConstantAngularAcceleration
5.3.KineticEnergyofRotation,RotationalInertia
5.4. Torque, and Newtons Second Law for Rotat
Chapter 4 Linear Momentum and Collisions
4.1.TheCenterofMass.NewtonsSecondLawforaSystemofParticles
4.2.LinearMomentumandItsConservation
4.3.CollisionandImpulse
4.4. Momentum and Kinetic Energy in Collisions
4.4. Momentum and Kinetic Energy in Collisions
T
Homework: 7, 10, 15, 21, 25, 30, 33 (p 131-133)
41, 47, 52 (p. 134-135)
of F
7. A 3.5 kg block is pushed along a horizontal floor by a force
magnitude 15 N at an angle =400 with the horizontal force. The
coefficient of kinetic friction between the block a
Applying Newtons laws:
Sample Problem 5-8: In the figure below, a passenger of mass m=72.2
kg stands on a platform scale in an elevator cab. We are concerned
with the scale readings when the cab is stationary and when it is
moving up or down.
) Find a gen
CHAPTER 8 PROBLEMS
Prob. 81A
The following transactions, adjusting entries, and closing entries were completed by Elko
Contractors Co. during the year ended December 31, 2006:
Mar. 15. Received 60% of the $18,500 balance owed by Bimba Co., a bankrupt
busi
1. On October 31, 2006, the following data were accumulated to assist the accountant in
preparing the adjusting entries for Melville Realty:
a. The supplies account balance on October 31 is $1,875. The supplies on hand on
October 31 are $310.
b. The unear