Physics 120
Term Test #2
Friday November 19, 2004
Only a basic, nonprogrammable calculator is allowed. You have approximately 50 minutes to complete this test.
Your work must be neat and easy to follow. If what you are doing is not clear, you will not get
Physics 120 Practice Midterm Exam
Name_
1) Two identical objects A and B fall from rest
from different heights to the ground. If
object B takes twice as long as A to reach
the ground, what is the ratio of the heights
from which A and B fell? Neglect air
r
Physics 120
2013 March 15
Midterm Exam 2 Solutions
Surname: Solutions
Academic Honesty: In accordance with the Academic Honesty Policy (T10.02), academic dishonesty in any form
will not be tolerated. Prohibited acts include, but are not limited to, the
Mechanics and
Modern Physics
PHYS 120
SFU
Fall 2015
Dr. Bernd
Stelzer
Bernd Stelzer
Sep 18
Today's Concepts:
a) Vectors
b) Projec6le Mo6on
Checkpoint: Three Ships explored
The initial velocity vector
of the cannon can be
decomposed into x and y:
Mechanics and
Modern Physics
PHYS 120
SFU
Fall 2015
Dr. Bernd
Stelzer
Bernd Stelzer
Nov 25th
Today's Concepts:
a) Angular Momentum
Announcements
Final Exam Preparation
Drop-In classes, Monday, 1:30-2:30 pm, P8445.2 (Fishbowl)
Problem solving session,
Mechanics and
Modern Physics
PHYS 120
SFU
Fall 2015
Dr. Bernd
Stelzer
Bernd Stelzer
Sep 14
Today's Concepts:
a) Displacement, Velocity, Accelera9on
b) 1-D Kinema9cs, graphs and constant accelera9on
Tutorials
Time
Location
Teaching Assistan
The gravitational force is weakest at the equator (because the earths
radius is largest there and the gravitational force is perpendicular to the
earths axis of rotation).
gapp = 9.780 m /s2 at the equator
gapp = 9.832 m /s2 at the poles
Consequently, it
Relative and Circular Motion
Todays Concepts:
a) Rela3ve mo3on
b) Centripetal accelera3on
Your Comments
I learned rela3ve mo3on in grade 11, thus I will need more
guidance through this concept. Centripetal accelera,on was
t
Mechanics and
Modern Physics
PHYS 120
Dr. Bernd
Stelzer
SFU
Fall
2015
Bernd Stelzer
Today's Concepts:
Dec 7th
Simple Harmonic Mo7on: Mo7on of a Pendulum
Announcements
Final Exam Preparation
Drop-In class, Monday, 1:30-2:30 pm, P9412/14 (First Year Lab)
Rotational Dynamics
Todays Concepts:
a) Rolling Kine6c Energy
b) Angular Accelera6on
Your Comments
SO CONFUSING! Would like a slower and more involved explana6on!
Thanks for the easier midterm I appreciate it
What's th
The gravitational force is weakest at the equator (because the earths
radius is largest there and the gravitational force is perpendicular to the
earths axis of rotation).
gapp = 9.780 m /s2 at the equator
gapp = 9.832 m /s2 at the poles
Consequently, it
Mechanics and
Modern Physics
PHYS 120
SFU
Fall 2015
Dr. Bernd
Stelzer
Bernd Stelzer
Sep 28
Today's Concepts:
a) Springs and Forces
b) Free Body Diagrams
Pre-Lecture Thoughts
Please go over spring in accelerating elevator question
Not so cle
Mechanics and
Modern Physics
PHYS 120
SFU
Fall 2015
Dr. Bernd
Stelzer
Bernd Stelzer
Oct 30th
Today's Concepts:
More Collisions, 1-D, 2-D, demos
Your comments
I'm so confused with the center of mass frame. I'd like to have more
problems about it as prac
Mechanics and
Modern Physics
PHYS 120
SFU
Fall 2015
Dr. Bernd
Stelzer
Bernd Stelzer
Nov 25th
Today's Concepts:
a) Angular Momentum
Your Comments
Very dicult to take in, a lot of new informa?on
I like how everything is related to things we learned in pr
Mechanics and
Modern Physics
PHYS 120
SFU
Fall 2015
Dr. Bernd
Stelzer
Bernd Stelzer
Oct 16th
Today's Concepts:
a) Work and Energy
b) Conserva8on of Energy
Stuff you asked about:
Please go over the math and theory involved with Earth'
Mechanics and
Modern Physics
PHYS 120
SFU
Fall 2015
Dr. Bernd
Stelzer
Bernd Stelzer
Oct 26th
Today's Concepts:
a) Conserva3on of Momentum
b) Inelas3c Collisions
Announcements
Homework (Center of Mass)
Lecture on this topic was only completed last Frid
Mechanics and
Modern Physics
PHYS 120
SFU
Fall 2015
Dr. Bernd
Stelzer
Bernd Stelzer
Oct 14th
Today's Concepts:
a) Work and Energy
b) Conserva8on of Energy
Midterm 1
I found the Midterm1 exam to be:
A. Very easy
B. Easy
C. Just right
D. hard
E. Very
Mechanics and
Modern Physics
PHYS 120
SFU
Fall 2015
Dr. Bernd
Stelzer
Bernd Stelzer
Nov 23rd
Today's Concepts:
a) Sta2c Equilibrium
b) Poten2al Energy & Stability
Your Comments
Explain footprint and achieving minimum poten2al energy please.
Everything
Mechanics and
Modern Physics
Dr. Bernd Stelzer
Today's Concepts:
a) Fric4on and circular mo4on
b) Pulleys and ropes
c) Work and energy
PHYS 120
SFU Fall 2015
Erol Girt
Oct 5th
Midterm 1 takes place Friday, October 9th (during lecture)
I-clicker: Normal force on an incline
N
B)
N
C)
N
mg
mg
mg
For a steeper incline,
normal force:
For a steeper incline,
net force:
A)Increases
A)Increases
B)Decreases
B)Decreases
C)Stays the same
C)Stays the same
Erol Girt
October 5, 2015
PHYS120
1
I-click
l.
PHYS 120
Tutorial #1 1
Two astronauts, each having a smass 75 kg, are connected by a light rope 10 m
long. They are isolated in space, and are initially revolving around their common
center of mass once every 6 seconds. They now pull in on the rope, ha
PHYS 120
Tutorial #7
1. Initially, block 1 with mass m1 = 1 kg is moving on a frictionless table with
velocity 01:1 mfs and block 2 with mass m2 = 0.5 kg is at rest. Block 1
collides elastically with block 2.
a) Find the velocities of block 1 and block
Physics 120: Tutorial 1
1. Usain Bolt’s position along the track during his World Record setting
run for the 100m sprint in Berlin in 2009 can be fairly well represented
by the following two formulae for times greater than his reaction time (i.e.
the time
Rotational Statics: Part I
Todays Concepts:
a) Torque Due to Gravity
b) Sta:c Equilibrium
Your Comments:
This website doesn't help me learn at all and all it does is make me more
confused. I really don't want to use this site anymore
Th
l.
PHYS 120
Tutorial #12
A block of mass M rests on a frictionless table and is
connected to the right end of a spring of spring
constant k. The left end of the spring is ﬁxed to a
vertical wall. At time t = 0 s the block is at x = 2.6
cm and moving to th
4.4 Eigenvalues and Eigenvectors
(based on notes from Dr. J. Manuch)
MATH232 D100 2016-3 Lecture 16
Paul Tupper
SFU Burnaby
Fixed points
Definition (fixed points)
Solutions to the matrix equation Ax = x, if any, are called fixed points of A.
Notes:
I
For
PHYSICS 120 NAME:
WEEK or OCTOBER 16, 2016- STUDENT #:
CENTER OF MASS PARTNERS:
SECTION:
(marks) 1-
( mar ids)
Tutorial Worksheet #6
A sherman in a boat catches a great White shark with a harpoon. The shark struggles
for a While and then becomes limp when
PHYS 120
Today's Concepts:
Dr. Bernd Stelzer
a) Parallel Axis Theorem
b) Torque
Your Comments
Please go over the parallel axis theorem using simpler
examples. I don't understand what Force of theta is.
Please explain the dumbbell checkpoint
Mechanics and
Modern Physics
PHYS 120
SFU Fall 2016
Erol Girt
Oct 21st
Today's Concepts:
More Collisions, 1-D, 2-D, demos
Your comments
Momentum is straightforward but can get tedious
Figuring out whether or not a collision is elastic or inelastic is st
Homework: Rotational Dynamics Three Masses
An green hoop with mass mh = 2.7 kg and radius Rh = 0.16 m hangs from a string
that goes over a blue solid disk pulley with mass md = 2.3 kg and radius Rd = 0.1
m. The ot