Rotation of a Rigid Object
About a Fixed Axis
Angular Position
Rotating disc
1
Angular Speed and Acceleration
The angular velocity vector of RB points
1. Upwards (out of the plane)
2. Downwards (into the plane)
3. Not enough information to
tell
170
4
1
Midterm exam feedback
Average according to original marking scheme:
32.2/54 = 60.0%
New marking scheme: take best three problems and best five conceptual
questions. New average:
32.1/50 = 64.2%
Average on individual questions:
Conceptual #1:
3.2/4
Concept
Laboratory Manual
Physics 131
Mechanics and Waves
September December 2013
Department of Physics
McGill University
c McGill University, 2013
General Guidelines for Laboratory Reports
Please read the lab manual in advance of your lab session! In addition,
r
1
1.1
Kinematics
Practice Questions
Practice Question 1:
Solution:
The equation for velocity as a function of time for a projectile in the vertical direction
is:
v = vo + at
This is the equation of a straight line with slope a (the acceleration, gravity i
PHYSICS 131 - Mechanics and Waves
Autumn 2013
Lab Schedule
Expt 1
Expt 2
Expt 3
Expt 4
Section 011
Monday
Sept
23
Oct
21
Nov 04
Nov 18
020
Tuesday
Sept
24
Oct
22
Nov 05
Nov 19
006
Tuesday
Sept
24
Oct
22
Nov 05
Nov 19
018
Wednesday
Sept.
25
Oct
23
Nov 06
N
McGill University Physics 131
(Mechanics and Waves)
Fall 2013 Session General Course Information
Welcome to PHYS 131, a course of study in mechanics and waves primarily for students
in Sciences and Engineering.
The course components are:
39 lectures
o Mo
Linear Momentum and Collisions
Linear Momentum and Its Conservation
Linear Momentum Conservation (continued)
A car and a truck travelling at the same speed are in a
head-on collision, and stick together. Which vehicle
experiences a larger magnitude of p (
Laboratory Manual
Physics 131
Mechanics and Waves
September December 2015
Department of Physics
McGill University
c McGill University, 2015
General Guidelines for Laboratory Reports
Please read the lab manual in advance of your lab session! In addition,
r
Motion in Two Dimensions
Position and Velocity Vectors
Average velocity
Instantaneous velocity
Direction of velocity along line
tangent to the path.
Speed
1
Acceleration Vector
Average acceleration
Instantaneous acceleration
As a result of accelera
Vectors
Coordinate Systems
Cartesian or rectangular (x,y)
Polar (r,)
1
Transformations
What are the polar coordinates of
the point (x,y) = (-3.50,-2.50) m ?
Vectors and Scalars
A scalar quantity is specified by a single value and a unit but
has no direc
Dynamics &The Laws of Motion
The concept of force
Force is the cause of acceleration.
If the net force exerted on an object is zero, its velocity
remains constant.
Types of forces:
Gravitational forces
Electromagnetic forces
(Nuclear forces)
(Weak forc
Motion in One Dimension
(Young & Freedman Chapter 2)
Position, Velocity, and Speed
Particle model the moving object is described as a point-like
particle with mass m.
Position x of the particle is its location at time t. Knowing the
position x(t) comple
Equation Sheet
Basic Constants for Mechanics
Standard Gravity
g = 9.81 m/s2
Gravitational constant
G = 6.67 10-11 Nm2/kg2
Pi
= 3.1415927
Velocity and Acceleration
1D Motion (valid for X & Y directions)
Velocity
Angular velocity
If displacement unknown
r
PHYS 131 MIDTERM
October 22nd, 2013
The exam comprises two parts: 6 short-answer questions, and 5 problems. Calculators are
allowed, as well as a formula sheet (one-side of an 8 x 11 sheet) of your own making.
Answer the short-answer questions with a few
PHYS 131 MIDTERM
October 21st, 2014
The exam comprises two parts: 5 short-answer questions (4 or 6 points each), and 4
problems (8 points each). Calculators are allowed, as well as a formula sheet (one-side of an
8 x 11 sheet) of your own making.
Answer t
McGill University Physics 131
(Mechanics and Waves)
Fall 2016 Session General Course Information
Welcome to PHYS 131, a course of study in mechanics and waves primarily for students in Sciences
and Engineering.
The course components are:
39 lectures
o Mo
voml Mam mum mmm > mve (:13th 4m: \3m-. .-. (1655de is @9333: _
mmcsmer between \uswophca and (by 033103 arapeures \mm.
19m Y- W n the airecn' on awn-5 which Haw: 10:va (8 Emma marred- idea
arm, mx 05' am 43: rays mm inmatam tines Wm mead \I= /n .mherema
Physics 1120: CAPA 3
SimpleCAPA.com
1
The figure shows the E-field in the plane of two point charges. (Give ALL
correct answers, i.e., B, AC, BCD. in alphabetical order.)
A) Q1 and Q2 have the same sign.
False. Q1 and Q2 do not have the same sign. Field l
Physics 1120: CAPA 10
SimpleCAPA.com
1
Which of the following statements for magnetism are true? (Give ALL
correct answers, i.e., B, AC, BCD.)
A) B acts only on charges at rest.
False. B only acts on moving charges.
B) B does work on a charge only when th
Physics 1120: CAPA 11
SimpleCAPA.com
1
A uniform magnetic field is directed into the page. A charged particle
moving in the plane of the page follows an anti-clockwise spiral of decreasing radius as shown. Give all possible correct answers (i.e., B, AC,
B
Physics 1120: CAPA 1
SimpleCAPA.com
1
The speed of a vehicle is 3.56 meters per second. Select from the list below all of the answers which express that speed using metric units AND
which are formatted so that CAPA can judge the answer. [* means multiply,
Physics 1120: CAPA 12
SimpleCAPA.com
1
The figures below show two different situations where a current may be
induced in a loop according to Faradays Law, with the direction given
by Lenz Law. The magnetic field is shown by the xs in Fig. 2. Select
ALL co