LECTURE 17
POTENTIAL ENERGY & CONSERVATIVE FORCES
Instructor: Kazumi Tolich
Lecture 17
2
Reading chapter 8-1 to 8-2
Conservative
and non-conservative forces
Potential energy
Conservative forces
3
The net work done by a conservative
force on a particle m
LECTURE 18
MECHANICAL ENERGY
Instructor: Kazumi Tolich
Lecture 18
2
Reading chapter 8-3
Mechanical
energy
Conservation of mechanical energy
Mechanical energy
3
The mechanical energy of a system is the sum of
kinetic energy and potential energy of the sy
LECTURE 22
CENTER OF MASS & ROCKETS
Instructor: Kazumi Tolich
Lecture 22
2
Reading chapter 9-7 to 9-8
Center
Rockets
of mass
Center of mass
3
Center of mass (CM) of an object or a system moves as if
all the mass were concentrated at that point, and all
LECTURE 19
CONSERVATION OF ENERGY
Instructor: Kazumi Tolich
Lecture 19
2
Reading chapter 8-4 to 8-5
Work
done by nonconservative forces
Potential energy curves and equipotentials
Work done by nonconservative forces
3
When nonconservative forces do work
LECTURE 20
MOMENTUM AND IMPULSE
Lecture Instructor: Kazumi Tolich
Lecture 20
2
Reading chapter 9-1 to 9-4
Momentum
2nd law with momentum
n Conservation of momentum
n Newtons
Impulse
n Impulse-momentum
theorem
Momentum
3
Linear momentum (p) or just momen
LECTURE 24
LINEAR AND ROTAIONAL QUANTITIES &
ROLLING
Instructor: Kazumi Tolich
Lecture 24
2
Read chapter 10-3 to 10-4
Linear
velocity
Tangential and centripetal accelerations
Rolling objects
n Rolling
without slipping
Tangential speed
3
Consider a poin
LECTURE 25
ROTATIONAL KINETIC ENERGY & MOMENT OF INERTIA
Instructor: Kazumi Tolich
Lecture 25
2
Reading chapter 10-5 to 10-6
Moment
of inertia
Rotational kinetic energy
Conservation of energy
Moment of inertia
3
The moment of inertia (I) about an axis
Name _ Student ID _ Score _
Last
First
40 multiple choice questions, 5 points each
Use the scenario below for the next three questions.
A particle is moving in the x-direction as a function of time as shown in the plot below. The
horizontal axis is marked
Name_ Student ID _ Score _
Last
First
I) Multiple choice (15 questions, 5 points each)
Use the following scenario for the next two problems.
A motorcycle starts braking at t = 0, and slows down at a constant acceleration of
a = 1.2 m/s2. The motorcycle st
Angular Momentum
TORQUE
Torque = Magnitude of Force x Lever Arm
T=F
l
l
F
Line of action
l
F
Line of action
Torque: negative
Direction?
Torque: positive
Lever arm: distance between the axis and the line of action of the force.
l=0
F
Line of action
T = 0,
PHYS 115 A and B, Winter 2015
Syllabus
Lecture schedule: M Tu Th F 8:30 9:20 am (A) or 11:30am 12:20pm (B)
Lecture Hall: PAA A102 in the auditorium wing of the Physics and Astronomy Building
Instructor: Dr. Svetlana Gladycheva
Email: [email protected]
Offic
Week
1
2
3
4
5
6
7
8
9
10
11
PHYSICS 115 schedule
Winter 2015
Date
Day Lecture topic
Text reading
5-Jan M
Static Fluids
15.1 to 15.3
6-Jan TU
Archimedes & Floating
15.4 to 15.5
8-Jan TH Fluids in Motion
15.6 to 15.8
9-Jan F
Temperature & Expansion
16.1 to
LECTURE 16
WORK & POWER
Instructor: Kazumi Tolich
Lecture 16
2
Reading chapter 7-3 to 7-4
Work
Power
done by a variable force
Work done by a constant force, graphically again
3
Work done by a constant force in the direction of
displacement is the area u
LECTURE 15
WORK & KINETIC ENERGY
Instructor: Kazumi Tolich
Lecture 15
2
Reading chapter 7-1 to 7-2
Work
done by a constant force
Energy
Kinetic Energy
Work-Energy Theorem
Systems and environments
3
A system is a small portion of the universe. A valid
LECTURE 13
STRINGS AND PULLEYS
Instructor: Kazumi Tolich
Lecture 13
2
Reading chapter 6-3 to 6-4
Strings
Pulleys
Tension in strings
3
In a rope dangling from a ceiling, tension is the
greatest at the ceiling due to the weight of the rest
of the rope dan
LECTURE 33
MORE GRAVITY
Instructor: Kazumi Tolich
Lecture 33
2
Measuring the mass of Earth
Evolution of stars
Measurement of G
3
G was first measured in 1798 by Cavandish using
a torsion balance.
The initial measurement yielded
G=6.75410-11Nm2/kg2
m1m2
Page 1 of 5
Chem 237 Homework 3
Instructions: You may work together on homework assignments, but each student must turn in their own
homework, in their own handwriting. Assignments must be turned in before the end of quiz section to
your TA. Electronic co
LECTURE 1
INTRODUCTION TO PHYSICS
Instructor: Kazumi Tolich
Lecture 1
2
Reading chapter 1-1 and 1-2
Scientific method
The SI units
What are science and physics?
3
Science is observing, discovering, understanding,
and recording the natural world.
A knowle
LECTURE 5
VECTORS
Instructor: Kazumi Tolich
Lecture 5
2
Reading chapter: 3-1 to 3-4
Scalars
verses vectors
Vector components
Vector addition
Vector subtraction
Multiplying a vector by a scalar
Unit vectors
Scalars verses vectors
3
A scalar is a numb
LECTURE 3
1D MOTION
Instructor: Kazumi Tolich
Lecture 3
2
Reading chapter 2-1 to 2-6
One
dimensional motion
n Position,
displacement, and distance
n Velocity and speed
n Acceleration
n Motion with a constant acceleration
Coordinate system and position
3
LECTURE 2
INTRODUCTION TO PHYSICS II
Instructor: Kazumi Tolich
Lecture 2
2
Reading chapter 1-3 and 1-8
Dimensional analysis
Scientific notation
Conversion of units
Vectors and scalars
Dimension
3
Dimension is the physical
nature of a quantity.
Dimension
LECTURE 12
FRICTION & SPRINGS
Instructor: Kazumi Tolich
Lecture 12
2
Reading chapter 6-1 to 6-2
Friction
n Static
friction
n Kinetic friction
Springs
Origin of friction
3
The origin of friction is electromagnetic
attraction force between molecules/atoms
LECTURE 6
r, v, a VECTORS
Instructor: Kazumi Tolich
Lecture 6
2
Reading chapter: 3-5
Position
vectors
Displacement vectors
Velocity vectors
Acceleration vectors
Position vectors
3
Position is a location described with the
distance and direction from a
LECTURE 4
FALLING
Instructor: Kazumi Tolich
Lecture 4
2
Reading chapter 2-7
Free
falling
Free fall equations
Free fall
3
Free fall is the motion of an object falling freely
under the influence of gravity alone.
Without air resistance, objects of differ
LECTURE 7
RELATIVE MOTION
Instructor: Kazumi Tolich
Lecture 7
2
Reading chapter 3-6
Frame
of reference
Relative velocity
Frame of reference
3
A frame of reference is a coordinate
system (x and y axes) for which an
observer is at rest with respect to
the
LECTURE 14
CIRCULAR MOTION
Instructor: Kazumi Tolich
Lecture 14
2
Reading chapter 6-5
Velocity
Uniform circular motion
n
Acceleration and speed
Centripetal and tangential acceleration of non-uniform circular motion
Dynamics of circular motion
n
n
n
Centri