Smith College
Picker Engineering Program
EGR 270
Homework #2
1.
You are an engineer at a
company that
manufactures swing sets.
Your current project is
to investigate the
viability of replacing the
chains on the swing set
shown with steel cables.
What is t
EGR 270: Mechanics
Picker Engineering Program
Smith College
Winter/Spring 2015
Prof. Mikic
STUDENT NAME: _
Test #2
Thursday, April 16, 2015
Notes/Instructions:
This is an open book/open notes exam.
You are bound by the Honor Code, which includes not getti
EGR 270: Mechanics
Picker Engineering Program
Smith College
Winter/Spring 2015
Prof. Mikic
STUDENT NAME: _
Test #1
Friday, March 6, 2015
Notes/Instructions:
This is an open book/open notes exam.
You are bound by the Honor Code, which includes not getting
2011 Springfield Tornado
EF3 (160 mph winds)
3 deaths
$140,000,000+ damage
Survivor Stories
"I grabbed my cat and jumped into the closet. The next thing
you know the whole trailer's flying into the air and flipping,
Minney and his 19-year-old cat Shadow b
Smith College
Picker Engineering Program
EGR 270: Homework #8
Complete 2 of the following 3 problems:
1. Calculate Ix and Iy for the given shape.
2. Calculate Ix and Iy for the given shape.
3. Calculate Ix and Iy for the given shape.
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Smith College
Picker Engineering Program
EGR 270: Homework #11
Complete 1 of the following 2 problems:
1. Athletes work out with a squat thrust
machine. To rotate the bar ABD, the
athlete must exert a vertical force at A
that causes the magnitude of the a
EGR 270: Knowledge Building Essay Grading
Addresses
prompt
thoroughly,
in-depth and
with much
insight
3. Based on your
response to question 2,
formulate some more
advanced thoughts and
inquiries.
4
3
2
1
4
3
2
1
5
2. Identify some
Picker Engineering Program
EGR 270
Course Syllabus
Course Story
Globalization and the need to constantly innovate in a knowledge economy are causing many of the most
interesting professionssuch as engineeringto change rapidly. When you interview for an en
Smith College
Picker Engineering Program
EGR 270
Homework 1
1. Problem 1.2-1 from Gere (see Moodle)
2. Problem 1.2-5 from Gere
3. Problem 1.2-7 from Gere
4. You will receive several pieces of Swedish Fish candy in class. Pull on the candy to stretch
it an
Smith College
Picker Engineering Program
EGR 270
Homework #3
Complete 1 of the following problems.
Gere 1.7-2
Gere 1.7-9
Gere 1.8-3
Complete 2 of the following problems from old EGR 270 tests.
1. The results of a tensile test are shown below. A 10-cm long
Smith College
Picker Engineering Program
EGR 270: Homework #4
Complete 4 of the following 5 problems.
1. The beam has a built-in support and is loaded
by a 2-kN force and a 6 kN-m couple.
a. Draw the free-body diagram of the beam.
b. Determine the reactio
Smith College
Picker Engineering Program
EGR 270: Homework #5
y
B
Complete the following problem:
10 N
2m
1. A 10 N force is applied at point B as shown.
a. What is the unit vector in the direction of the force?
b. What are the x, y and z components of th
Smith College
Picker Engineering Program
EGR 270: Homework #6
Complete 2 of the following 3 problems.
Determine the x and y coordinates of the
centroid of the area shown if a=3.
Determine the x and y coordinates of the
centroid of the area shown.
Determin
Smith College
Picker Engineering Program
EGR 270: Homework #7
Complete all of the following problems:
7.46 Find the reactions at A and B.
7.55 Find the reactions at A and B.
7.66 The aerodynamic lift of
the wing is described by the
distributed load w = -3
Smith College
Picker Engineering Program
EGR 270: Homework #10
Complete 2 of the following problems (labeled 1, 2 or 3 below):
1. Determine the internal forces (P and V)
and moment (M) at A.
2. The mass m = 120 kg. Determine the internal
forces and moment
Smith College
Picker Engineering Program
EGR 270: Homework #9
Answer the following question for one of the two trusses below.
1. Find the force in the indicated member using both method of joints and method of
sections.
Calculate the minimum cross-section
Smith College
Picker Engineering Program
EGR 270: Homework #10
Complete 2 of the following 3 problems.
1.
2.
3. Estimate the moment of inertia about the centroidal axes for a bone crosssection in the human body. Be sure to include with your answer a neat