The Legend of the Falling Apple


Newton was not the first to discover gravity. Newton discovered that gravity is universal.
LegendNewton, sitting under an apple tree, realized that the force causing an Apple to
accelerate downward is the same force cau
Forces of Friction



To slide one such surface across another requires a force larger enough to overcome the
resistance of microscopic hills and valley bumping together. This is the origin of the
force we call friction
When an object is in motion on a
Class 9/9/2016, Kinematics
Dr. Ilia Gogoladze
Physics by Walker, 4th edition
Instantaneous Velocity

V = lim

SI unit: meter per second, m/s
This means that we evaluate the average velocity over a shorter and shorter periods of
time; as that time become
Class 9/7/2016, Kinematics
Dr. Ilia Gogoladze
Physics by Walker, 4th edition
Mechanics

The study of how objects move, how they respond to external forces, and how other
factors, such as size, mass and mass distribution, affect their motion
This time we
Dr. Ilia Gogoladze
Physics by Walker, 4th edition
Force

A push and pull
Forces are what cause any change in the velocity of an object
Classes of Forces

Contact forces
o Involve physical contact between two objects
Field forces
o Act through empty spac
Torque

Torque, , is the tendency of a force to rotate an object about some axis.
There is no unique value of the torque on an object.
Its value depends on the choice of a rotational axis
Torque increases with both the force and the distance
= rF
= r (
Conservative energy

The work it does is stored in the form of energy that can be released at a later time
Gravity
Spring force
Non conservative energy

Work done cannot be recovered later as kinetic energy; instead, it is converted to other
forms of en
Class 6 Vectors in Physics
Dr. Ilia Gogoladze
Physics by Walker, 4th edition
Adding Vectors



Two ways to add vectors
o Graphically
Tip to tail or head to tail
The resultant is drawn from the origin of the first vector to the end of the
last vector
Angular Position,


Angle measured from reference line
SI Unit; rad
Radian
o A radian is the angle for which the arc length on a circle of radius r is equal to the
radius of the circle
o Whenever using rotational equations, you must use angles expresse
Linear Momentum

Product if mass and velocity of an object
=
SI unit: kg*m/s
A vector
The total momentum of a system of objects is the vector sum of the momenta of all the
objects
=
1 +
2 +
3 +
Momentum and Newtons Second Law

=
The net force a
Deaf/ Hard of Hearing
IDEA Definition of Deafness
A hearing loss that is so severe that the child is impaired in
processing linguistic information through hearing, with or
without amplification that adversely affects a childs educational
performance
IDEA
Just as mainstream schools for neurotypical students vary in curriculum, services
provided and the age and characteristics of the students, schools for students with disabilities
also vary depending on the disability present. In an effort to delve deeper
(1) The educational characteristics of the children served in the schools
John G. Leach School
Ages 321
Physical disabilities, moderate to severe cognitive disabilities, or serious health
impairments (D)
100% special education students (Leach (John G.
Employment for All
Some of the greatest thinkers in history have had intellectual disabilities, including Albert
Einstein, George Washington and Leonardo da Vinci (Masters in Special Education, 2017).
Although these famous innovators are now recognized fo
Inclusion vs. Continuum
Inclusion embraces the presence of typical developing students in the same
classroom as children with disabilities, learning and collaborating together. On the other
hand, the continuum of services demonstrates a more restrictive a
University of Delaware, Physics Dept. Phys 207 ( 4cr.)
SYLLABUS
SPRING 2017 PETER GEORGOPULOS
E MAIL ADDRESS:
Office: 220 SHL
[email protected]
CLASS SCHEDULE:
Phys 207010 Lecture, T,Th 8:00 AM 9:15 AM, 131 SHL linked with Discussion sections:D20D23
Phys 20
PHYS309 Homework 2 solutions
2.33. (a) Given E = 1125 MeV and cp = 817 MeV, since
2 2
( mc )
2
= E 2 ( cp ) ,
we find the particles rest energy is mc2 = 773.4 MeV.
(b) Since the rest energy is invariant, for cp = 953 MeV, we find the energy in frame O is
L02 Acceleration Due to Gravity on an Inclined Plane
1
PreLab Exercises
Full Name:
Lab Section:
Hand this in at the beginning of the lab period. The grade for these exercises will be
included in your lab grade this week. Feel free to look for the answers
L07 Rotational Motion and the Moment of Inertia
1
PreLab Exercise
Full Name:
Lab Section:
Hand this in at the beginning of the lab period. The grade for these exercises will be included
in your lab grade this week.
In class we derived the moment of inert
L05 The ImpulseMomentum Theorem
1
PreLab Exercises
Full Name:
Lab Section:
Hand this in at the beginning of the lab period. The grade for these exercises will be included
in your lab grade this week.
1. What formula is typically used to represent the im
PHYS309 Homework 1
Problems from Krane Chapter 2:
1. Use a coordinate system with the y axis oriented due North and the x axis
oriented due East. Denote the wind velocity, i.e. the velocity of the air as measured
by a fixed observer on the ground, by vag,
L01 Introductory Exercises and the Acceleration Due to Gravity
PreLab Exercises
Full Name:
Lab Section:
Hand this in at the beginning of the lab period. The grade for these exercises will be
included in your lab grade this week.
1) What general formula,
L06 A Rigid Body in Static Equilibrium
1
PreLab Exercises
Full Name:
Lab Section:
Hand this in at the beginning of the lab period. The grade for these exercises will be
included in your lab grade this week.
1. What is the formula that gives torque, a vec
L08 Simple Harmonic Motion (SHM) Physical Pendulum Plate
1
Simple Harmonic Motion Physical Pendulum
Full Name:
Lab Partners Names:
Lab Section:
Purpose:
a) To study the behavior of a simple harmonic motion physical pendulum.
b) To fit the experimental dat
L03 The Coefficient of Static Friction
1
PreLab Exercises
Full Name:
Lab Section:
Hand this in at the beginning of the lab period. The grade for these exercises will be
included in your lab grade this week.
1.
A box of mass m is resting on a flat table.
PHYS207 Lab 5
ImpulseMomentum Theorem
Instructional Goals:
Accurately measure the force applied to a moving cart.
Accurately measure the carts velocity at different times to calculate its momentum.
Quantitatively compare the force applied to an object thr
PHYS207 Lab 6
Static Equilibrium
Instructional Goals:
Goal:
Investigate the concepts of Torques and Forces in Equilibrium.
Apply vector decomposition (see Vectors lab)
Use quantitative analysis to determine if your experimental setup agrees with the pr
PHYS207 Lab 8
The Physical Pendulum
Instructional Goals:
Goals:
To study the behavior of a simple harmonic motion physical pendulum.
To fit the experimental data of vs t for a slightly damped physical pendulum with the equation
max e Bt cos t .
To find