Spring Forces Class Exercises
Physics
1. The staples in a stapler are pulled into position by a spring with a spring constant of 50 N/m. When
the stapler is open, the spring is 8 cm long and relaxed. When you close the stapler, the spring stretches
to 15
Physics of Musical Sound, 33114 Homework #1, Spring, 2017
SOLUTIONS
Problem 1) Hall 13
v(30 C) = 344 m/s + 0.6 m/s C(30 20) C= 350 m/s.
t = d/v =(350 m)/(350 m/s) = 0.1 s.
Problem 2) Hall 16
Reasonable chest area estimates might range from (0.1  0.3)
Physics of Musical Sound, 33114 Homework #2
Due MONDAY, February 06, 2017 (in class)
Problems 1  5) Hall  Chapter 4, Problems 4, 7, 9, 11, 13
Problem 6) Hall  Chapter 4, Problem 8 (examtype)
Instead of several wavelengths as Hall asks for, please det
Physics of Musical Sound, 33114 Homework #1
Due Friday, January 27, 2017 (in class!)
Note that partial answers for many problems are in the back of the textbook. You are expected to
also provide reasoning and calculations to justify the answers, however!
33141 Physics for Engineering Students I
Exam I
Name _SOLUTIONS_
Fall 2016
September 23
Section_
Signature_
This exam has THREE multipart problems for a total of 100 points.
Make sure your copy of the exam has all problems included. Read each problem ca
David Anderson  Andrew Smith
Homework 7 Solutions
Physics for Engineers I Fall 2016
Problem Solutions
Problem 6.7 Two blocks are connected by a very light string passing over a massless
and frictionless pulley (Fig. E6.7). Traveling at constant speed, th
Homework Assignment III  Solutions
Physics I for Engineering Students
September 19, 2016
Problem 3.13
Figure 1: The car jumps over the river.
Let us choose the axes in such a way that the the x axis coincides with the other side of the river, i.e., the s
33141 Physics for Engineering Students I
Exam II
Fall 2016
October 14
Name _
Section_
Signature_
This exam has THREE multipart problems for a total of 100 points.
Make sure your copy of the exam has all problems included. Read each problem carefully bef
Homework Assignment 6  Solutions
Physics I for Engineering Students
October 11, 2016
Problem 5.42
Let the x and y axes be chosen as shown. Let the car have a mass m, its speed be v, and the radius of the track be
R. Let at points A amd B, the normal reac
Week 3 Homework Assignment
Due Tuesday Recitation, Week 4
NB.

Problem set covers sections 3.13.5 and 9.3
Numbered problems are from University Physics 13th ed.
Make sure to solve the problems in general algebraic terms first before substituting numeric
33141 Physics for Engineering Students I
Exam I
Name _
Fall 2016
September 23
Section_
Signature_
This exam has THREE multipart problems for a total of 100 points.
Make sure your copy of the exam has all problems included. Read each problem carefully be
Homework Assignment 9  Solutions
Physics I for Engineering Students
October 31, 2016
Problem 7.8
Let us now consider a mass m at the top of the ramp initially. Let the coefficient of kinetic friction be k . During any
point of the motion, the forces on t
33141 Physics for Engineering Students I
Exam II
Fall 2016
October 14
Name _
Section_
Signature_
This exam has THREE multipart problems for a total of 100 points.
Make sure your copy of the exam has all problems included. Read each problem carefully bef
Homework Assignment I  Solutions
Physics I for Engineering Students
September 6, 2016
Problem 1.16
The estimated population of the USA is about 3.2 million people = 3.2 106 people.
So, the number of cars is about, according to the problem statement,
numb
David Anderson  Andrew Smith
Homework 5 Solutions
Physics for Engineers I Fall 2016
1
1.1
Problem Solutions
Problem 5.31 You are lowering two boxes, one on top of the other, down the ramp
shown in Fig. E5.31 by pulling on a rope parallel to the surface o
Week 7 Homework Assignment
Due Tuesday Recitation, Week 8
Problem set covers chapter 6
6.7 Two blocks are connected by a very light string passing over a massless and frictionless
pulley (Fig. E6.7). Traveling at constant speed, the 20.0N block moves 75.
Week 5 Homework Assignment
Due Tuesday Recitation, Week 6
Problem set covers sections 5.15.3, 8.5, and 13.113.2.
5.31 You are lowering two boxes, one on top of the other, down the ramp shown in Fig. E5.31 by
pulling on a rope parallel to the surface of
Week 4 Homework Assignment
Due Tuesday Recitation, Week 5
Problem set covers chapter 4 and sections 10.110.2
4.14 A 2.75kg cat moves in a straight line (the xaxis). Figure E4.14 shows a graph of the xcomponent of this cats velocity as a function of tim
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1k proxfksm Fakes ow: 30 coulckb (or [M 335% 65 59 Watt mauweog
M We (3 no km: pm; (23:0
UAdbr Ms cmohkm, FM PM low of Wmcmms is: [LUV bJ
FOFOA expansiox M mu Glam. 3 m 3% (w) 6 W
David Anderson  Andrew Smith
Homework 2 Solutions
Physics for Engineers I Fall 2016
Problem 2.67
(a) the total distance moved and
Since the gazelle never has a negative velocity, the total distance moved will just be the displacement,
which is the area u
Homework Assignment 11  Solutions
Physics I for Engineering Students
November 14, 2016
Problem 8.50
Figure 1: In the lab (L) frame.
Let the mass of the nucleus me mn . It is initially at rest with respect to (wrt, henceforth) the lab frame. Then,
vCM L
Week 2 Homework Assignment
NB.

Due Tuesday Recitation, Week 3
Problem set covers sections 2.42.5 and 9.19.2
Numbered problems are from University Physics 13th ed.
Make sure to solve the problems in general algebraic terms first before substituting num
Week 1 Homework Assignment
NB.


Due Tuesday Recitation, Week 2
Problem set covers chapter 1 and sections 2.12.3
Numbered problems are from University Physics 13th ed.
In problems involving vectors find each answer by a calculation. Sketches and drawin
Week 12 Homework Assignment
Due Tuesday Recitation, Week 13
Problem set covers sections 18.118.4
Thermodynamics: Ideal Gas Law
X1. A cylinder with a piston contains an ideal gas, as shown.
A valve is opened allowing the gas to escape slowly. When the val
Week 11 Homework Assignment
Due Tuesday Recitation, Week 12
Problem set covers sections 8.4, and 17.117.7
8.50 You are at the controls of a particle accelerator, sending a beam of 1.50 107 m/s protons
(mass m) at a gas target of an unknown element. Your