Physics 151 Quiz 6 Spring 2016
Name: Discussion Section
1a. [5 pts.] A box of mass 2kg is moving in a straight line on frictionless ground with constant
speed 5111/ s. A second box of mass 1kg is dropped vertically on the moving box and sticks to it.
Th

Physics 151 Spring 2016
Lecture #08
Work and Energy
Announcements
q This week (Feb. 8-12)
Introduce Work-Energy Theorem and
the concept of potential energy
Q3 based on HW3 (at end of discussion sections)
HW4 topics will be reviewed in discussion sectio

Physics 151 Spring 2016
Lecture #7
More applications of Newtons Laws
and the dynamics of circular motion
Announcements
q Next week (Feb. 8-12)
Introduce Work-Energy Theorem and
the conservation of mechanical energy
Q3 based on HW3 (at end of discussion

Physics 151 Quiz 6 Spring 2017
Name: Discussion Section
1. [8 pts.]
Two children of masses m = 40kg and M = 60kg, in a t of poor judgment,
decide to play tug of war on ice (frictionless). Initially they are L = 2m apart.
E?
CILLMZ 3 11.17 g M C; J C C H

Physics 151 Quiz 9 Spring 2017
N rune: . . Discussion Section
Moment of Inertia about an axis through the centre of mass:
Diskzllc/RQ, Ring: 11/1132, Spherezg-AIIRZ, RodzfiMLQ
Parallel Axis Theorem: I [I 2 [CM + 771112
. _ GMm _ G'Um 2 _ tl'r2 3
FG - w1'2

Physics 151 Quiz 7 Spring 2017
Name: Discussion Section
Moment of Inertia about an axis through the centre of mass:
Diskz-il/IRZ, Ring: M R2, SpllCl'ngllJR2, RodzML2
1. [8 pts.] Consider a. uniform disk of radius R and mass M which is free to rotate
aro

Physics 151 ' Quiz 8 Spring 2017
N ame: Discussion 1 Section
Moment of Inertia about an axis through the centre of mass:
Diskzll/[Ra Ring: M R2, 813110.113ng R2, RodszML2
1. [8 pts.]
A sphere of mass M : 1kg and radius R 2 0.25m is rolling without slippin

Physics 151 .1 Quiz 10 V' M '1 Spring 2017
Name: Recitation Section
1. [8 pt.] The diagram below shows a glass tube with one end which is air tight and closed to
atmosphere. The pressure inside the glass tube is H = 2313a where Pa = 105Pa is the atmosph

Physics 151 Quiz 11 Spring 2016
Name: Recitation Section
9 = 10m/s2 w = T = 2: (Bernoullis Equation) $0112 | pgh + P = constant
1. [8 points] A pipe with a variable cross section is shown below. The end labeled 1 has cross
sectional area 30m2, and pressur

Physics 151 Spring 2016
Lecture #5
More basic kinematics:
Uniform circular motion
Announcements
q Next week (Feb. 1-5 )
Normal class schedule
Quiz 2 based on HW2
Labs Monday Thursday
See Weekly Updates for details
q I remind you there are drop-in help ses

Lecture 9
2.12.16
Conservative force: 0 when on a closed track. Only initial and final point matter.
Nonconservative force: friction and other stuf
Conservation of energy
KE(i)+PE(i)=KE(f)+PE(f)
In example 4, tension in the rod changes depending on which

Physics 151
Name:
Quiz 1
Spring 2016
Discussion Section
1.[3 pt.] In the International System (SI) of measurement what are the required standard units
for mechanics?
2.[7 pt.] A car is travelling along a straight road with constant velocity v0 . The drive

Physics 151 Quiz 5 Spring 2016
Name: 3 0 L074 ‘5 N Discussion Section
1. [10 points] (Show all work)
1. A particle of mass 1kg is moving along the x axis under the action of a potential whose graph
is given below. Certain values of the potential U are m

Physics 151
Quiz 6
Spring 2016
Name:
Discussion Section
1a. [5 pts.] A box of mass 2kg is moving in a straight line on frictionless ground with constant
speed 5m/s. A second box of mass 1kg is dropped vertically on the moving box and sticks to it.
The spe

Physics 151
Quiz 5
Name:
Spring 2016
Discussion Section
1. [10 points] (Show all work)
1. A particle of mass 1kg is moving along the x axis under the action of a potential whose graph
is given below. Certain values of the potential U are marked on the gra

Physics 151
Quiz 3
Name:
Spring 2016
Discussion Section
1. [6 points] (Show all work)
A mass M is at rest hung from two strings from two walls as shown in the diagram. Both strings
make angle = 30 with the horizontal as shown. The strings have
tension T

PhySiCS 151 Quiz 2 Spring 2016
Name: Discussion Section
Use 9 = lOm/s2 for numerical calculations throughout.
1. [8 points] (Show all work) A ball is dropped from rest from a height H. It bounces off the
ﬂoor. Below is the graph of the velocity of the bal

Physics 151 Quiz 3 Spring 2016
Name: Discussion Section
1. [6 points] (Show all work)
A mass M is at rest hung from two strings from two walls as shown in the diagram. Both strings i
make angle Oz = 30° with the horizontal as shown. The strings have ten

Physics 151
Quiz 2
Name:
Spring 2016
Discussion Section
Use g = 10m/s2 for numerical calculations throughout.
1. [8 points] (Show all work) A ball is dropped from rest from a height H. It bounces off the
floor. Below is the graph of the velocity of the ba

Physics 151 Quiz 1 Spring 2016
Name: Discussion Section
1.[3 pt.] In the International System (SI) of measurement what are the required standard units
for mechanics?
L j N W FF M
mw)l’ua )SbusM-J
2.[7 pt.] A car is travelling along a straight road with co

Physics 151
Quiz 10
Name:
Spring 2017
Recitation Section
1. [8 pt.] The diagram below shows a glass tube with one end which is air tight and closed to
atmosphere. The pressure inside the glass tube is Pi = 45 Pa where Pa = 105 Pa is the atmospheric
pressu

Physics 151
Name:
Quiz 8
Spring 2017
Discussion Section
Moment of Inertia about an axis through the centre of mass:
1
Disk= 21 M R2 , Ring= M R2 , Sphere= 25 M R2 , Rod= 12
M L2
1. [8 pts.]
A sphere of mass M = 1kg and radius R = 0.25m is rolling without

Physics 151
Quiz 1
Name:
Spring 2017
Discussion Section
A particle is moving in a straight line and starts at x = 0. The graph denotes
the velocity of the particle as a function of time.
F
2.5
Velocity (m/s)
2
1.5
1
0.5
-0.5
t
0.5 1 1.5 2
2.5
-1
-1.5
Time

Physics 151
Quiz 5
Name:
Spring 2017
Discussion Section
1. [10 pts.] A particle of mass 1kg is moving along the x axis under the action of a
potential whose graph is given below. Certain values of the potential U are marked
on the graph.
U
4J
2J A B
C
E
x

Physics 151
Name:
Quiz 4
Spring 2017
Discussion Section
1. [6 pts.] A particle of mass m = 1kg is moving along the x axis. It starts from
x = 1m with initial speed 2m/s. The particle is acted upon by an x dependent force
F (x) = 1 x, where F is measured i

Physics 161 Challenge Problem W.1
The bob at the end of a simple pendulum of length L is released from rest from an angle
0 . (a) Model the pendulums motion as simple harmonic motion, and find its speed as it
passes through = 0 by using the small angle ap

Physics 161 Challenge Problem 9.5
Two disks of identical mass but different radii (r and 2r) are spinning on frictionless
bearings at the same angular speed 0 , but in opposite directions. The two disks are brought
slowly together. The resulting frictiona

Physics 161 Challenge Problem 6.1
As you drive your car along a country road at night, a deer jumps out of the woods and
stands in the middle of the road ahead of you. This occurs just as you are passing from a 55
mi/h zone to a 50 mi/h zone. At the 50 mi

Physics 161 Challenge Problem G.1
An object is projected vertically from the surface of Earth at less than the escape speed.
Show that the maximum height reached by the object is H = RE H 0 /(RE H 0 ), where H 0
is the height that it would reach if the gr

Challenge Problem 2.1
Ball A is dropped from the top of a building of height h at the same instant that ball B
is thrown vertically upward from the ground. When the balls collide, they are moving in
opposite directions, and the speed of A is twice the spe

Physics 151
Quiz 9
Name:
Spring 2017
Discussion Section
Moment of Inertia about an axis through the centre of mass:
1
Disk= 21 M R2 , Ring= M R2 , Sphere= 25 M R2 , Rod= 12
M L2
2
Parallel Axis Theorem: Ik = ICM + md
m
4 2 3
FG = GM
, UG = GMr m , T 2 = G

Physics 151
Quiz 6
Name:
Spring 2017
Discussion Section
1. [8 pts.]
Two children of masses m = 40kg and M = 60kg, in a fit of poor judgment,
decide to play tug of war on ice (frictionless). Initially they are L = 2m apart.
M
u
L
m
a. When they drag each o

Physics 151
Quiz 7
Name:
Spring 2017
Discussion Section
Moment of Inertia about an axis through the centre of mass:
1
Disk= 21 M R2 , Ring= M R2 , Sphere= 25 M R2 , Rod= 12
M L2
1. [8 pts.] Consider a uniform disk of radius R and mass M which is free to r

Physics 151
Quiz 11
Name:
g = 10m/s2
Spring 2016
Recitation Section
=
q
k
m
T =
2
(Bernoullis Equation) 21 v 2 + gh + P = constant
1. [8 points] A pipe with a variable cross section is shown below. The end labeled 1 has cross
sectional area 3cm2 , and pre

Physics 151 Quiz 3 Spring 2017
Name: Discussion Section
1. [9 pts.] Consider the diagram below which shows a mass m 2 1kg is connected to
a mass M Which is placed on a frictionless incline of base angle 0 = 30. The tension
T in the string is measured to b